Public Lab Wiki documentation

Now that you have a working spectrometer, what do you point it at? Give these experiments a shot. If you haven't yet, you should first calibrate your spectrometer with a CFL bulb.

Please add your own activity ideas, and mention how much time it'll take, an estimate of the cost, etc.

1. Measure gases in the atmosphere

This is a simple activity and a good starting place. Simply go outside during the day and point the spectrometer at an evenly illuminated part of the sky -- cloud or blue sky both work.

Even though air is pretty clear, pointing your spectrometer through miles of the atmosphere places many molecules between your spectrometer and your light source (AKA the sun). Because of the sheer amount of molecules, you can see lines where CO2, O2, O3, and water vapor have absorbed part of the spectrum. These are known as the Frauenhofer lines.

Look at other people's atmospheric spectra: for example, see: https://spectralworkbench.org/analyze/spectrum/913 (image below) and browse other examples here: https://spectralworkbench.org/tag/sunlight

Explore more and share: try pointing your spectrometer different directions in the sky, both towards and away from the sun. Where did you point your spectrometer to get the clearest absorption lines? Any idea why? Post a research note with your data and describe what you did.

2. Point it at different types of light bulb

Now let's try measuring artificial light sources. Go indoors and find some different kinds of light bulbs like LEDs, incandescent bulbs, and fluorescent bulbs (try "warm" and "cool" ones!). Turn them on and point your spectrometer at them. Notice how much less of "the rainbow" you see compared to the sun - see the distinct emission lines of the mercury spectrum from mercury vapor in the lamps. You can read more about measuring emission spectra (especially in flames) here: http://publiclab.org/wiki/spectrometry-sampling#Flame+spectroscopy

Incandescent: (more examples)

LED (more examples)

Fluorescent: (more examples)

Neon: (more examples)

See these examples of neon lights: http://publiclab.org/notes/cfastie/2-23-2013/neon

Lasers: Try different colors of lasers - each of which will produce only a narrow band of colored light. Consider how to measure it without overloading the spectrometer with too much light. (more examples)

What's next?

Try some more advanced activities -- many of which have only been attempted a few times. If you succeed, please post your results, as you'll be contributing to ongoing research. For these activities, you'll need a few more supplies beyond what comes in the kit.

Detect sodium in table salt

15-20 minutes, 1 candle, bunsen burner or propane burner With a candle and a small spray bottle of salt water, you can measure the emission spectrum of the sodium in table salt.

Read more about this type of activity here

Detect chlorophyll in olive oil

15-20 minutes, 1 green laser or strong UV light

Shine a laser or a very strong UV light through a sample in a square-sided transparent container. Shine the light perpendicular to the direction the spectrometer is pointed, so that you measure only the color emitted by the sample, and not the green laser or UV light itself. If your olive oil has enough chlorophyll (especially greenish, extra-virgin olive oils), you'll be able to see a yellow, orange, or reddish glow. Since the laser (or UV light) is producing no red, orange, or yellow light, that light must have been produced by the "excited" chlorophyll.

The hardest part of this activity (still not a solved problem!) is getting enough light from the glowing sample to be detected by the camera. Please share your work if you're able to get it to work!

Read more about this type of activity here and about using lasers to do this here

Advanced tests

Help advance this project -- please share your results if you manage to record data of one of these!

Measure other things in your kitchen

Try scanning a solution of alum? Mineral supplements dissolved in water? http://www.amazon.com/b/ref=dp_brw_link?node=3774271

Oils

Motor / Olive - compare two types of oil Garage version: get oil from your car

Laundry detergents

Try to detect blueing dyes in laundy detergent UV light:

• see JoshMC's post about this here: http://publiclab.org/notes/joshmc/4-28-2012/setup-uv-testing-specrtrometer
• and his results here: https://spectralworkbench.org/sets/show/15

Blending green and red tomatoes in alcohol for comparison, and to detect lycopene.

Comparing foods

Great documentation has been posted about using absorption spectroscopy (shining a full spectrum light like a halogen through a sample, often blended); please add to this list if you find more:

• Comparing red and green tomatoes, blended in alcohol
• Comparing grades of maple syrup

A graph of different grades of maple syrup, by Chris Fastie

Beer's Law

Varying concentrations of liquids like coffee, wine, soda, juice. Try to demonstrate Beer's Law by diluting your sample with 50% water, repeatedly.

• see examples here: http://publiclab.org/tag/beers-law

Venture off into the unknown.

See Spectral Analysis Techniques for an overview of different kinds of spectrometry.

Read about sample preparation of liquids and solids, and what kinds of sample containers to use: http://publiclab.org/wiki/spectrometry-sampling

Now that you have a working spectrometer, what do you point it at? Give these experiments a shot. If you haven't yet, you should first calibrate your spectrometer with a CFL bulb.

Please add your own activity ideas, and mention how much time it'll take, an estimate of the cost, etc.

1. Measure gases in the atmosphere

This is a simple activity and a good starting place. Simply go outside during the day and point the spectrometer at an evenly illuminated part of the sky -- cloud or blue sky both work.

Even though air is pretty clear, pointing your spectrometer through miles of the atmosphere places many molecules between your spectrometer and your light source (AKA the sun). Because of the sheer amount of molecules, you can see lines where CO2, O2, O3, and water vapor have absorbed part of the spectrum. These are known as the Frauenhofer lines.

Look at other people's atmospheric spectra: for example, see: https://spectralworkbench.org/analyze/spectrum/913 (image below) and browse other examples here: https://spectralworkbench.org/tag/sunlight

Explore more and share: try pointing your spectrometer different directions in the sky, both towards and away from the sun. Where did you point your spectrometer to get the clearest absorption lines? Any idea why? Post a research note with your data and describe what you did.

2. Point it at different types of light bulb

Now let's try measuring artificial light sources. Go indoors and find some different kinds of light bulbs like LEDs, incandescent bulbs, and fluorescent bulbs (try "warm" and "cool" ones!). Turn them on and point your spectrometer at them. Notice how much less of "the rainbow" you see compared to the sun - see the distinct emission lines of the mercury spectrum from mercury vapor in the lamps. You can read more about measuring emission spectra (especially in flames) here: http://publiclab.org/wiki/spectrometry-sampling#Flame+spectroscopy

Incandescent: (more examples)

LED (more examples)

Fluorescent: (more examples)

Neon: (more examples)

See these examples of neon lights: http://publiclab.org/notes/cfastie/2-23-2013/neon

Lasers: Try different colors of lasers - each of which will produce only a narrow band of colored light. Consider how to measure it without overloading the spectrometer with too much light. (more examples)

What's next?

Try some more advanced activities -- many of which have only been attempted a few times. If you succeed, please post your results, as you'll be contributing to ongoing research. For these activities, you'll need a few more supplies beyond what comes in the kit.

Detect sodium in table salt

15-20 minutes, 1 candle, bunsen burner or propane burner With a candle and a small spray bottle of salt water, you can measure the emission spectrum of the sodium in table salt.

Read more about this type of activity here

Detect chlorophyll in olive oil

15-20 minutes, 1 green laser or strong UV light

Shine a laser or a very strong UV light through a sample in a square-sided transparent container. Shine the light perpendicular to the direction the spectrometer is pointed, so that you measure only the color emitted by the sample, and not the green laser or UV light itself. If your olive oil has enough chlorophyll (especially greenish, extra-virgin olive oils), you'll be able to see a yellow, orange, or reddish glow. Since the laser (or UV light) is producing no red, orange, or yellow light, that light must have been produced by the "excited" chlorophyll.

The hardest part of this activity (still not a solved problem!) is getting enough light from the glowing sample to be detected by the camera. Please share your work if you're able to get it to work!

Read more about this type of activity here and about using lasers to do this here

Advanced tests

Help advance this project -- please share your results if you manage to record data of one of these!

Measure other things in your kitchen

Try scanning a solution of alum? Mineral supplements dissolved in water? http://www.amazon.com/b/ref=dp_brw_link?node=3774271

Oils

Motor / Olive - compare two types of oil Garage version: get oil from your car

Laundry detergents

Try to detect blueing dyes in laundy detergent UV light:

• see JoshMC's post about this here: http://publiclab.org/notes/joshmc/4-28-2012/setup-uv-testing-specrtrometer
• and his results here: https://spectralworkbench.org/sets/show/15

Comparing foods

Great documentation has been posted:

• plant pigments
• maple syrup

Beer's Law

Varying concentrations of liquids like coffee, wine, soda, juice. Try to demonstrate Beer's Law by diluting your sample with 50% water, repeatedly.

• see examples here: http://publiclab.org/tag/beers-law

Venture off into the unknown.

See Spectral Analysis Techniques for an overview of different kinds of spectrometry.

Read about sample preparation of liquids and solids, and what kinds of sample containers to use: http://publiclab.org/wiki/spectrometry-sampling

Now that you have a working spectrometer, what do you point it at? Give these experiments a shot. If you haven't yet, you should first calibrate your spectrometer with a CFL bulb.

Please add your own activity ideas, and mention how much time it'll take, an estimate of the cost, etc.

1. Measure gases in the atmosphere

This is a simple activity and a good starting place. Simply go outside during the day and point the spectrometer at an evenly illuminated part of the sky -- cloud or blue sky both work.

Even though air is pretty clear, pointing your spectrometer through miles of the atmosphere places many molecules between your spectrometer and your light source (AKA the sun). Because of the sheer amount of molecules, you can see lines where CO2, O2, O3, and water vapor have absorbed part of the spectrum. These are known as the Frauenhofer lines.

Look at other people's atmospheric spectra: for example, see: https://spectralworkbench.org/analyze/spectrum/913 (image below) and browse other examples here: https://spectralworkbench.org/tag/sunlight

Explore more and share: try pointing your spectrometer different directions in the sky, both towards and away from the sun. Where did you point your spectrometer to get the clearest absorption lines? Any idea why? Post a research note with your data and describe what you did.

2. Point it at different types of light bulb

Now let's try measuring artificial light sources. Go indoors and find some different kinds of light bulbs like LEDs, incandescent bulbs, and fluorescent bulbs (try "warm" and "cool" ones!). Turn them on and point your spectrometer at them. Notice how much less of "the rainbow" you see compared to the sun - see the distinct emission lines of the mercury spectrum from mercury vapor in the lamps. You can read more about measuring emission spectra (especially in flames) here: http://publiclab.org/wiki/spectrometry-sampling#Flame+spectroscopy

Incandescent: (more examples)

LED (more examples)

Fluorescent: (more examples)

Neon: (more examples)

See these examples of neon lights: http://publiclab.org/notes/cfastie/2-23-2013/neon

Lasers: Try different colors of lasers - each of which will produce only a narrow band of colored light. Consider how to measure it without overloading the spectrometer with too much light. (more examples)

What's next?

Try some more advanced activities -- many of which have only been attempted a few times. If you succeed, please post your results, as you'll be contributing to ongoing research. For these activities, you'll need a few more supplies beyond what comes in the kit.

Detect sodium in table salt

15-20 minutes, 1 candle, bunsen burner or propane burner With a candle and a small spray bottle of salt water, you can measure the emission spectrum of the sodium in table salt.

Read more about this type of activity here

Detect chlorophyll in olive oil

15-20 minutes, 1 green laser or strong UV light

Shine a laser or a very strong UV light through a sample in a square-sided transparent container. Shine the light perpendicular to the direction the spectrometer is pointed, so that you measure only the color emitted by the sample, and not the green laser or UV light itself. If your olive oil has enough chlorophyll (especially greenish, extra-virgin olive oils), you'll be able to see a yellow, orange, or reddish glow. Since the laser (or UV light) is producing no red, orange, or yellow light, that light must have been produced by the "excited" chlorophyll.

The hardest part of this activity (still not a solved problem!) is getting enough light from the glowing sample to be detected by the camera. Please share your work if you're able to get it to work!

Read more about this type of activity here and about using lasers to do this here

Advanced tests

Help advance this project -- please share your results if you manage to record data of one of these!

Measure other things in your kitchen

Try scanning a solution of alum? Mineral supplements dissolved in water? http://www.amazon.com/b/ref=dp_brw_link?node=3774271

Oils

Motor / Olive - compare two types of oil Garage version: get oil from your car

Laundry detergents

Try to detect blueing dyes in laundy detergent UV light:

• see JoshMC's post about this here: http://publiclab.org/notes/joshmc/4-28-2012/setup-uv-testing-specrtrometer
• and his results here: https://spectralworkbench.org/sets/show/15

Comparing foods

Great documentation has been posted:

• http://publiclab.org/notes/cfastie/10-10-2013/lycopene
• maple syrup (find link)

Beer's Law

Varying concentrations of liquids like coffee, wine, soda, juice. Try to demonstrate Beer's Law by diluting your sample with 50% water, repeatedly.

• see examples here: http://publiclab.org/tag/beers-law

Venture off into the unknown.

See Spectral Analysis Techniques for an overview of different kinds of spectrometry.

Read about sample preparation of liquids and solids, and what kinds of sample containers to use: http://publiclab.org/wiki/spectrometry-sampling

Now that you have a working spectrometer, what do you point it at? Give these experiments a shot. If you haven't yet, you should first calibrate your spectrometer with a CFL bulb.

Please add your own activity ideas, and mention how much time it'll take, an estimate of the cost, etc.

1. Measure gases in the atmosphere

This is a simple activity and a good starting place. Simply go outside during the day and point the spectrometer at an evenly illuminated part of the sky -- cloud or blue sky both work.

Even though air is pretty clear, pointing your spectrometer through miles of the atmosphere places many molecules between your spectrometer and your light source (AKA the sun). Because of the sheer amount of molecules, you can see lines where CO2, O2, O3, and water vapor have absorbed part of the spectrum. These are known as the Frauenhofer lines.

Look at other people's atmospheric spectra: for example, see: https://spectralworkbench.org/analyze/spectrum/913 (image below) and browse other examples here: https://spectralworkbench.org/tag/sunlight

Explore more and share: try pointing your spectrometer different directions in the sky, both towards and away from the sun. Where did you point your spectrometer to get the clearest absorption lines? Any idea why? Post a research note with your data and describe what you did.

2. Point it at different types of light bulb

Now let's try measuring artificial light sources. Go indoors and find some different kinds of light bulbs like LEDs, incandescent bulbs, and fluorescent bulbs (try "warm" and "cool" ones!). Turn them on and point your spectrometer at them. Notice how much less of "the rainbow" you see compared to the sun - see the distinct emission lines of the mercury spectrum from mercury vapor in the lamps. You can read more about measuring emission spectra (especially in flames) here: http://publiclab.org/wiki/spectrometry-sampling#Flame+spectroscopy

Incandescent: (more examples)

LED (more examples)

Fluorescent: (more examples)

Neon: (more examples)

See these examples of neon lights: http://publiclab.org/notes/cfastie/2-23-2013/neon

Lasers: Try different colors of lasers - each of which will produce only a narrow band of colored light. Consider how to measure it without overloading the spectrometer with too much light. (more examples)

What's next?

Try some more advanced activities -- many of which have only been attempted a few times. If you succeed, please post your results, as you'll be contributing to ongoing research. For these activities, you'll need a few more supplies beyond what comes in the kit.

Detect sodium in table salt

15-20 minutes, 1 candle, bunsen burner or propane burner With a candle and a small spray bottle of salt water, you can measure the emission spectrum of the sodium in table salt.

Read more about this type of activity here

Detect chlorophyll in olive oil

15-20 minutes, 1 green laser or strong UV light

Shine a laser or a very strong UV light through a sample in a square-sided transparent container. Shine the light perpendicular to the direction the spectrometer is pointed, so that you measure only the color emitted by the sample, and not the green laser or UV light itself. If your olive oil has enough chlorophyll (especially greenish, extra-virgin olive oils), you'll be able to see a yellow, orange, or reddish glow. Since the laser (or UV light) is producing no red, orange, or yellow light, that light must have been produced by the "excited" chlorophyll.

The hardest part of this activity (still not a solved problem!) is getting enough light from the glowing sample to be detected by the camera. Please share your work if you're able to get it to work!

Read more about this type of activity here and about using lasers to do this here

Advanced tests

Help advance this project -- please share your results if you manage to record data of one of these!

Measure other things in your kitchen

Try scanning a solution of alum? Mineral supplements dissolved in water? http://www.amazon.com/b/ref=dp_brw_link?node=3774271

Oils

Motor / Olive - compare two types of oil Garage version: get oil from your car

Laundry detergents

Try to detect blueing dyes in laundy detergent UV light:

• see JoshMC's post about this here: http://publiclab.org/notes/joshmc/4-28-2012/setup-uv-testing-specrtrometer
• and his results here: https://spectralworkbench.org/sets/show/15

Beer's Law

Varying concentrations of liquids like coffee, wine, soda, juice. Try to demonstrate Beer's Law by diluting your sample with 50% water, repeatedly.

• see examples here: http://publiclab.org/tag/beers-law

Venture off into the unknown.

See Spectral Analysis Techniques for an overview of different kinds of spectrometry.

Read about sample preparation of liquids and solids, and what kinds of sample containers to use: http://publiclab.org/wiki/spectrometry-sampling

Now that you have a working spectrometer, what do you point it at? Give these experiments a shot. If you haven't yet, you should first calibrate your spectrometer with a CFL bulb.

Please add your own activity ideas, and mention how much time it'll take, an estimate of the cost, etc.

1. Measure gases in the atmosphere

This is a simple activity and a good starting place. Simply go outside during the day and point the spectrometer at an evenly illuminated part of the sky -- cloud or blue sky both work.

Even though air is pretty clear, pointing your spectrometer through miles of the atmosphere places many molecules between your spectrometer and your light source (AKA the sun). Because of the sheer amount of molecules, you can see lines where CO2, O2, O3, and water vapor have absorbed part of the spectrum. These are known as the Frauenhofer lines.

Look at other people's atmospheric spectra: for example, see: https://spectralworkbench.org/analyze/spectrum/913 (image below) and browse other examples here: https://spectralworkbench.org/tag/sunlight

Explore more and share: try pointing your spectrometer different directions in the sky, both towards and away from the sun. Where did you point your spectrometer to get the clearest absorption lines? Any idea why? Post a research note with your data and describe what you did.

2. Point it at different types of light bulb

Now let's try measuring artificial light sources. Go indoors and find some different kinds of light bulbs like LEDs, incandescent bulbs, and fluorescent bulbs (try "warm" and "cool" ones!). Turn them on and point your spectrometer at them. Notice how much less of "the rainbow" you see compared to the sun - see the distinct emission lines of the mercury spectrum from mercury vapor in the lamps. You can read more about measuring emission spectra (especially in flames) here: http://publiclab.org/wiki/spectrometry-sampling#Flame+spectroscopy

Incandescent: (more examples)

LED (more examples)

Fluorescent: (more examples)

Neon: (more examples)

See these examples of neon lights: http://publiclab.org/notes/cfastie/2-23-2013/neon

Lasers: Try different colors of lasers - each of which will produce only a narrow band of colored light. Consider how to measure it without overloading the spectrometer with too much light. (more examples)

What's next?

Try some more advanced activities -- many of which have only been attempted a few times. If you succeed, please post your results, as you'll be contributing to ongoing research. For these activities, you'll need a few more supplies beyond what comes in the kit.

Detect sodium in table salt

15-20 minutes, 1 candle, bunsen burner or propane burner With a candle and a small spray bottle of salt water, you can measure the emission spectrum of the sodium in table salt.

Read more about this type of activity here

Detect chlorophyll in olive oil

15-20 minutes, 1 green laser or strong UV light

Shine a laser or a very strong UV light through a sample in a square-sided transparent container. Shine the light perpendicular to the direction the spectrometer is pointed, so that you measure only the color emitted by the sample, and not the green laser or UV light itself. If your olive oil has enough chlorophyll (especially greenish, extra-virgin olive oils), you'll be able to see a yellow, orange, or reddish glow. Since the laser (or UV light) is producing no red, orange, or yellow light, that light must have been produced by the "excited" chlorophyll.

The hardest part of this activity (still not a solved problem!) is getting enough light from the glowing sample to be detected by the camera. Please share your work if you're able to get it to work!

Read more about this type of activity here and about using lasers to do this here

Advanced tests

Help advance this project -- please share your results if you manage to record data of one of these!

Measure other things in your kitchen

Try scanning a solution of alum? Mineral supplements dissolved in water? http://www.amazon.com/b/ref=dp_brw_link?node=3774271

Oils

Motor / Olive - compare two types of oil Garage version: get oil from your car

Laundry detergents

Try to detect blueing dyes in laundy detergent UV light:

• see JoshMC's post about this here: http://publiclab.org/notes/joshmc/4-28-2012/setup-uv-testing-specrtrometer
• and his results here: https://spectralworkbench.org/sets/show/15

Beer's Law

Varying concentrations of liquids like coffee, wine, soda, juice. Try to demonstrate Beer's Law by diluting your sample with 50% water, repeatedly.

• see examples here: http://publiclab.org/tag/beers-law

Venture off into the unknown.

See Spectral Analysis Techniques for an overview of different kinds of spectrometry.

Read about sample preparation of liquids and solids, and what kinds of sample containers to use: http://publiclab.org/wiki/spectrometry-sampling

Now that you have a working spectrometer, what do you point it at? Give these experiments a shot. If you haven't yet, you should first calibrate your spectrometer with a CFL bulb.

Please add your own activity ideas, and mention how much time it'll take, an estimate of the cost, etc.

1. Measure gases in the atmosphere

This is a simple activity and a good starting place. Simply go outside during the day and point the spectrometer at an evenly illuminated part of the sky -- cloud or blue sky both work.

Even though air is pretty clear, pointing your spectrometer through miles of the atmosphere places many molecules between your spectrometer and your light source (AKA the sun). Because of the sheer amount of molecules, you can see lines where CO2, O2, O3, and water vapor have absorbed part of the spectrum. These are known as the Frauenhofer lines.

Look at other people's atmospheric spectra: for example, see: https://spectralworkbench.org/analyze/spectrum/913 (image below) and browse other examples here: https://spectralworkbench.org/tag/sunlight

Explore more and share: try pointing your spectrometer different directions in the sky, both towards and away from the sun. Where did you point your spectrometer to get the clearest absorption lines? Any idea why? Post a research note with your data and describe what you did.

2. Point it at different types of light bulb

Now let's try measuring artificial light sources. Go indoors and find some different kinds of light bulbs like LEDs, incandescent bulbs, and fluorescent bulbs (try "warm" and "cool" ones!). Turn them on and point your spectrometer at them. Notice how much less of "the rainbow" you see compared to the sun - see the distinct emission lines of the mercury spectrum from mercury vapor in the lamps. You can read more about measuring emission spectra (especially in flames) here: http://publiclab.org/wiki/spectrometry-sampling#Flame+spectroscopy

Incandescent: (more examples)

LED (more examples)

Fluorescent: (more examples)

Neon: (more examples)

See these examples of neon lights: http://publiclab.org/notes/cfastie/2-23-2013/neon

Lasers: Try different colors of lasers - each of which will produce only a narrow band of colored light. Consider how to measure it without overloading the spectrometer with too much light. (more examples)

What's next?

Try some more advanced activities. You'll need more supplies beyond what comes in the kit for these tests.

Detect sodium in table salt

15-20 minutes, 1 candle, bunsen burner or propane burner With a candle and a small spray bottle of salt water, you can measure the emission spectrum of the sodium in table salt.

Read more about this type of activity here

Detect chlorophyll in olive oil

15-20 minutes, 1 green laser or strong UV light

Shine a laser or a very strong UV light through a sample in a square-sided transparent container. Shine the light perpendicular to the direction the spectrometer is pointed, so that you measure only the color emitted by the sample, and not the green laser or UV light itself. The hardest part of this activity (still not a solved problem!) is getting enough light from the glowing sample to be detected by the camera. Please share your work if you're able to get it to work!

Read more about this type of activity here and about using lasers to do this here

Advanced tests

Help advance this project -- please share your results if you manage to record data of one of these!

Measure other things in your kitchen

Try scanning a solution of alum? Mineral supplements dissolved in water? http://www.amazon.com/b/ref=dp_brw_link?node=3774271

Oils

Motor / Olive - compare two types of oil Garage version: get oil from your car

Laundry detergents

Try to detect blueing dyes in laundy detergent UV light:

• see JoshMC's post about this here: http://publiclab.org/notes/joshmc/4-28-2012/setup-uv-testing-specrtrometer
• and his results here: https://spectralworkbench.org/sets/show/15

Beer's Law

Varying concentrations of liquids like coffee, wine, soda, juice. Try to demonstrate Beer's Law by diluting your sample with 50% water, repeatedly.

• see examples here: http://publiclab.org/tag/beers-law

Venture off into the unknown.

See Spectral Analysis Techniques for an overview of different kinds of spectrometry.

Read about sample preparation of liquids and solids, and what kinds of sample containers to use: http://publiclab.org/wiki/spectrometry-sampling

Now that you have a working spectrometer, what do you point it at? Give these experiments a shot. If you haven't yet, you should first calibrate your spectrometer with a CFL bulb.

Please add your own activity ideas, and mention how much time it'll take, an estimate of the cost, etc.

1. Measure gases in the atmosphere

This is a simple activity and a good starting place. Simply go outside during the day and point the spectrometer at an evenly illuminated part of the sky -- cloud or blue sky both work.

Even though air is pretty clear, pointing your spectrometer through miles of the atmosphere places many molecules between your spectrometer and your light source (AKA the sun). Because of the sheer amount of molecules, you can see lines where CO2, O2, O3, and water vapor have absorbed part of the spectrum. These are known as the Frauenhofer lines.

Look at other people's atmospheric spectra: for example, see: https://spectralworkbench.org/analyze/spectrum/913 (image below) and browse other examples here: https://spectralworkbench.org/tag/sunlight

Explore more and share: try pointing your spectrometer different directions in the sky, both towards and away from the sun. Where did you point your spectrometer to get the clearest absorption lines? Any idea why? Post a research note with your data and describe what you did.

2. Point it at different types of light bulb

Now let's try measuring artificial light sources. Go indoors and find some different kinds of light bulbs like LEDs, incandescent bulbs, and fluorescent bulbs (try "warm" and "cool" ones!). Turn them on and point your spectrometer at them. Notice how much less of "the rainbow" you see compared to the sun - see the distinct emission lines of the mercury spectrum from mercury vapor in the lamps. You can read more about measuring emission spectra (especially in flames) here: http://publiclab.org/wiki/spectrometry-sampling#Flame+spectroscopy

Incandescent: (more examples)

LED (more examples)

Fluorescent: (more examples)

Neon: (more examples)

See these examples of neon lights: http://publiclab.org/notes/cfastie/2-23-2013/neon

Lasers: Try different colors of lasers - each of which will produce only a narrow band of colored light. Consider how to measure it without overloading the spectrometer with too much light. (more examples)

What's next?

Try some more advanced tests. You'll need more supplies beyond what comes in the kit for these tests.

Detect sodium in table salt

15-20 minutes, 1 candle, bunsen burner or propane burner With a candle and a small spray bottle of salt water, you can measure the emission spectrum of the sodium in table salt. Read more about this type of activity here

Advanced tests

Help advance this project -- please share your results if you manage to record data of one of these!

Measure other things in your kitchen

Try scanning a solution of alum? Mineral supplements dissolved in water? http://www.amazon.com/b/ref=dp_brw_link?node=3774271

Oils

Motor / Olive - compare two types of oil Garage version: get oil from your car

Laundry detergents

Try to detect blueing dyes in laundy detergent UV light:

• see JoshMC's post about this here: http://publiclab.org/notes/joshmc/4-28-2012/setup-uv-testing-specrtrometer
• and his results here: https://spectralworkbench.org/sets/show/15

Beer's Law

Varying concentrations of liquids like coffee, wine, soda, juice. Try to demonstrate Beer's Law by diluting your sample with 50% water, repeatedly.

• see examples here: http://publiclab.org/tag/beers-law

Venture off into the unknown.

See Spectral Analysis Techniques for an overview of different kinds of spectrometry.

Read about sample preparation of liquids and solids, and what kinds of sample containers to use: http://publiclab.org/wiki/spectrometry-sampling

Now that you have a working spectrometer, what do you point it at? Give these experiments a shot. If you haven't yet, you should first calibrate your spectrometer with a CFL bulb.

Please add your own activity ideas, and mention how much time it'll take, an estimate of the cost, etc.

1. Measure gases in the atmosphere

This is a simple activity and a good starting place. Simply go outside during the day and point the spectrometer at an evenly illuminated part of the sky -- cloud or blue sky both work.

Even though air is pretty clear, pointing your spectrometer through miles of the atmosphere places many molecules between your spectrometer and your light source (AKA the sun). Because of the sheer amount of molecules, you can see lines where CO2, O2, O3, and water vapor have absorbed part of the spectrum. These are known as the Frauenhofer lines.

Look at other people's atmospheric spectra: for example, see: https://spectralworkbench.org/analyze/spectrum/913 (image below) and browse other examples here: https://spectralworkbench.org/tag/sunlight

Explore more and share: try pointing your spectrometer different directions in the sky, both towards and away from the sun. Where did you point your spectrometer to get the clearest absorption lines? Any idea why? Post a research note with your data and describe what you did.

2. Point it at different types of light bulb

Now let's try measuring artificial light sources. Go indoors and find some different kinds of light bulbs like LEDs, incandescent bulbs, and fluorescent bulbs (try "warm" and "cool" ones!). Turn them on and point your spectrometer at them. Notice how much less of "the rainbow" you see compared to the sun - see the distinct emission lines of the mercury spectrum from mercury vapor in the lamps. You can read more about measuring emission spectra (especially in flames) here: http://publiclab.org/wiki/spectrometry-sampling#Flame+spectroscopy

Incandescent:

LED

Fluorescent:

Neon:

See these examples of neon lights: http://publiclab.org/notes/cfastie/2-23-2013/neon

Lasers: Try different colors of lasers - each of which will produce only a narrow band of colored light. Consider how to measure it without overloading the spectrometer with too much light.

What's next?

Try some more advanced tests. You'll need more supplies beyond what comes in the kit for these tests.

Detect sodium in table salt

15-20 minutes, 1 candle, bunsen burner or propane burner With a candle and a small spray bottle of salt water, you can measure the emission spectrum of the sodium in table salt. Read more about this type of activity here

Advanced tests

Help advance this project -- please share your results if you manage to record data of one of these!

Measure other things in your kitchen

Try scanning a solution of alum? Mineral supplements dissolved in water? http://www.amazon.com/b/ref=dp_brw_link?node=3774271

Oils

Motor / Olive - compare two types of oil Garage version: get oil from your car

Laundry detergents

Try to detect blueing dyes in laundy detergent UV light:

• see JoshMC's post about this here: http://publiclab.org/notes/joshmc/4-28-2012/setup-uv-testing-specrtrometer
• and his results here: https://spectralworkbench.org/sets/show/15

Beer's Law

Varying concentrations of liquids like coffee, wine, soda, juice. Try to demonstrate Beer's Law by diluting your sample with 50% water, repeatedly.

• see examples here: http://publiclab.org/tag/beers-law

Venture off into the unknown.

See Spectral Analysis Techniques for an overview of different kinds of spectrometry.

Read about sample preparation of liquids and solids, and what kinds of sample containers to use: http://publiclab.org/wiki/spectrometry-sampling

Now that you have a working spectrometer give these experiments a shot. Please add your own activity ideas, and include how much time it'll take, an estimate of the cost, etc. If you haven't yet, you should first calibrate your spectrometer with a CFL bulb.

1. Measure gases in the atmosphere

This is a good starting place. Simply go outside during the day and point the spectrometer at an evenly illuminated part of the sky -- cloud or blue sky both work.

Even though air is pretty clear, pointing your spectrometer through miles of the atmosphere places many molecules between your spectrometer and your light source (AKA the sun). Because of the sheer amount of molecules, you can see lines where CO2, O2, O3, and water vapor have absorbed part of the spectrum. These are known as the Frauenhofer lines.

Look at other people's atmospheric spectra: for example, see: https://spectralworkbench.org/analyze/spectrum/913 (image below) and browse other examples here: https://spectralworkbench.org/tag/sunlight

Explore more and share: try pointing your spectrometer different directions in the sky, both towards and away from the sun. Where did you point your spectrometer to get the clearest absorption lines? Any idea why? Post a research note with your data and describe what you did.

2. Point it at different lights

Now let's try using manmade light sources. Go indoors and find some different kinds of light bulbs. Turn them on and point your spectrometer at them. Notice how much less of "the rainbow" you see compared to the sun - see the distinct emission lines of the mercury spectrum from mercury vapor in the lamps.

Incandescent:

Flourescent: (Flourescent spectrum example image)

Neon: See these examples of neon lights: http://publiclab.org/notes/cfastie/2-23-2013/neon

Lasers: Get different colors of lasers - each of which will produce only a narrow band of colored light. Consider how to measure it without overloading the spectrometer with too much light.

What's next?

Try some more advanced tests. You'll need more supplies beyond what comes in the kit for these tests.

Detect sodium in table salt

15-20 minutes, 1 candle, bunsen burner or propane burner With a candle and a small spray bottle of salt water, you can measure the emission spectrum of the sodium in table salt. Read more about this type of activity here

Advanced tests

Help advance this project -- please share your results if you manage to record data of one of these!

Measure other things in your kitchen

Try scanning a solution of alum? Mineral supplements dissolved in water? http://www.amazon.com/b/ref=dp_brw_link?node=3774271

Oils

Motor / Olive - compare two types of oil Garage version: get oil from your car

Laundry detergents

Try to detect blueing dyes in laundy detergent UV light:

• see JoshMC's post about this here: http://publiclab.org/notes/joshmc/4-28-2012/setup-uv-testing-specrtrometer
• and his results here: https://spectralworkbench.org/sets/show/15

Beer's Law

Varying concentrations of liquids like coffee, wine, soda, juice. Try to demonstrate Beer's Law by diluting your sample with 50% water, repeatedly.

• see examples here: http://publiclab.org/tag/beers-law

Venture off into the unknown.

See Spectral Analysis Techniques for an overview of different kinds of spectrometry.

Read about sample preparation of liquids and solids, and what kinds of sample containers to use: http://publiclab.org/wiki/spectrometry-sampling

Now that you have a working spectrometer give these experiments a shot. Please add your own activity ideas, and include how much time it'll take, an estimate of the cost, etc. If you haven't yet, you should first calibrate your spectrometer with a CFL bulb.

1. Measure gases in the atmosphere

This is a good starting place. Simply go outside during the day and point the spectrometer at an evenly illuminated part of the sky -- cloud or blue sky both work.

Even though air is pretty clear, pointing your spectrometer through miles of the atmosphere places many molecules between your spectrometer and your light source (AKA the sun). Because of the sheer amount of molecules, you can see lines where CO2, O2, O3, and water vapor have absorbed part of the spectrum. These are known as the Frauenhofer lines.

For example, see: https://spectralworkbench.org/analyze/spectrum/913 (image below) and browse other examples here: https://spectralworkbench.org/tag/sunlight

Try different directions in the sky, towards and away from the sun. Where did you point your spectrometer to get the clearest absorption lines? Any idea why? Post a research note with your data and describe what you did.

2. Point it at different lights

Now let's try using manmade light sources. Go indoors and find some different kinds of light bulbs. Turn them on and point your spectrometer at them. Notice how much less of "the rainbow" you see compared to the sun - see the distinct emission lines of the mercury spectrum from mercury vapor in the lamps.

Incandescent:

Flourescent: (Flourescent spectrum example image)

Neon: See these examples of neon lights: http://publiclab.org/notes/cfastie/2-23-2013/neon

Lasers: Get different colors of lasers - each of which will produce only a narrow band of colored light. Consider how to measure it without overloading the spectrometer with too much light.

What's next?

Try some more advanced tests. You'll need more supplies beyond what comes in the kit for these tests.

Detect sodium in table salt

15-20 minutes, 1 candle, bunsen burner or propane burner With a candle and a small spray bottle of salt water, you can measure the emission spectrum of the sodium in table salt. Read more about this type of activity here

Advanced tests

Help advance this project -- please share your results if you manage to record data of one of these!

Measure other things in your kitchen

Try scanning a solution of alum? Mineral supplements dissolved in water? http://www.amazon.com/b/ref=dp_brw_link?node=3774271

Oils

Motor / Olive - compare two types of oil Garage version: get oil from your car

Laundry detergents

Try to detect blueing dyes in laundy detergent UV light:

• see JoshMC's post about this here: http://publiclab.org/notes/joshmc/4-28-2012/setup-uv-testing-specrtrometer
• and his results here: https://spectralworkbench.org/sets/show/15

Beer's Law

Varying concentrations of liquids like coffee, wine, soda, juice. Try to demonstrate Beer's Law by diluting your sample with 50% water, repeatedly.

• see examples here: http://publiclab.org/tag/beers-law

Venture off into the unknown.

See Spectral Analysis Techniques for an overview of different kinds of spectrometry.

Read about sample preparation of liquids and solids, and what kinds of sample containers to use: http://publiclab.org/wiki/spectrometry-sampling

Now that you have a working spectrometer give these experiments a shot. Please add your own activity ideas, and include how much time it'll take, an estimate of the cost, etc. _If you haven't yet, you should first calibrate your spectrometer with a CFL bulb. _

1. Measure gases in the atmosphere

This is a good starting place. Simply go outside during the day and point the spectrometer at an evenly illuminated part of the sky -- cloud or blue sky both work.

Even though air is pretty clear, pointing your spectrometer through miles of the atmosphere places many molecules between your spectrometer and your light source (AKA the sun). Because of the sheer amount of molecules, you can see lines where CO2, O2, O3, and water vapor have absorbed part of the spectrum. These are known as the Frauenhofer lines.

For example, see: https://spectralworkbench.org/analyze/spectrum/913 (image below) and browse other examples here: https://spectralworkbench.org/tag/sunlight

Try different directions in the sky, towards and away from the sun. Where did you point your spectrometer to get the clearest absorption lines? Any idea why? Post a research note with your data and describe what you did.

2. Point it at different lights

Now let's try using manmade light sources. Go indoors and find some different kinds of light bulbs. Turn them on and point your spectrometer at them. Notice how much less of "the rainbow" you see compared to the sun - see the distinct emission lines of the mercury spectrum from mercury vapor in the lamps.

Incandescent:

Flourescent: (Flourescent spectrum example image)

Neon: See these examples of neon lights: http://publiclab.org/notes/cfastie/2-23-2013/neon

Lasers: Get different colors of lasers - each of which will produce only a narrow band of colored light. Consider how to measure it without overloading the spectrometer with too much light.

What's next?

Try some more advanced tests. You'll need more supplies beyond what comes in the kit for these tests.

Detect sodium in table salt

15-20 minutes, 1 candle, bunsen burner or propane burner With a candle and a small spray bottle of salt water, you can measure the emission spectrum of the sodium in table salt. Read more about this type of activity here

Advanced tests

Help advance this project -- please share your results if you manage to record data of one of these!

Measure other things in your kitchen

Try scanning a solution of alum? Mineral supplements dissolved in water? http://www.amazon.com/b/ref=dp_brw_link?node=3774271

Oils

Motor / Olive - compare two types of oil Garage version: get oil from your car

Laundry detergents

Try to detect blueing dyes in laundy detergent UV light:

• see JoshMC's post about this here: http://publiclab.org/notes/joshmc/4-28-2012/setup-uv-testing-specrtrometer
• and his results here: https://spectralworkbench.org/sets/show/15

Beer's Law

Varying concentrations of liquids like coffee, wine, soda, juice. Try to demonstrate Beer's Law by diluting your sample with 50% water, repeatedly.

• see examples here: http://publiclab.org/tag/beers-law

Venture off into the unknown.

See Spectral Analysis Techniques for an overview of different kinds of spectrometry.

Read about sample preparation of liquids and solids, and what kinds of sample containers to use: http://publiclab.org/wiki/spectrometry-sampling

Now that you have a working spectrometer give these experiments a shot. Please add your own activity ideas, and include how much time it'll take, an estimate of the cost, etc. If you haven't yet, you should first calibrate your spectrometer with a CFL bulb

1. Measure gases in the atmosphere

This is a good starting place. Simply go outside during the day and point the spectrometer at an evenly illuminated part of the sky -- cloud or blue sky both work.

Even though air is pretty clear, pointing your spectrometer through miles of the atmosphere places many molecules between your spectrometer and your light source (AKA the sun). Because of the sheer amount of molecules, you can see lines where CO2, O2, O3, and water vapor have absorbed part of the spectrum. These are known as the Frauenhofer lines.

For example, see: https://spectralworkbench.org/analyze/spectrum/913 (image below) and browse other examples here: https://spectralworkbench.org/tag/sunlight

Try different directions in the sky, towards and away from the sun. Where did you point your spectrometer to get the clearest absorption lines? Any idea why? Post a research note with your data and describe what you did.

2. Point it at different lights

Now let's try using manmade light sources. Go indoors and find some different kinds of light bulbs. Turn them on and point your spectrometer at them. Notice how much less of "the rainbow" you see compared to the sun - see the distinct emission lines of the mercury spectrum from mercury vapor in the lamps.

(Flourescent spectrum example image)

See these examples of neon lights: http://publiclab.org/notes/cfastie/2-23-2013/neon

Lasers

Different colors of lasers - each of which will produce only a narrow band of colored light. Consider how to measure it without overloading the spectrometer with too much light.

What's next?

Try some more advanced tests. You'll need more supplies beyond what comes in the kit for these tests.

Detect sodium in table salt

15-20 minutes, 1 candle, bunsen burner or propane burner With a candle and a small spray bottle of salt water, you can measure the emission spectrum of the sodium in table salt. Read more about this type of activity here

Advanced tests

Help advance this project -- please share your results if you manage to record data of one of these!

Measure other things in your kitchen

Try scanning a solution of alum? Mineral supplements dissolved in water? http://www.amazon.com/b/ref=dp_brw_link?node=3774271

Oils

Motor / Olive - compare two types of oil Garage version: get oil from your car

Laundry detergents

Try to detect blueing dyes in laundy detergent UV light:

• see JoshMC's post about this here: http://publiclab.org/notes/joshmc/4-28-2012/setup-uv-testing-specrtrometer
• and his results here: https://spectralworkbench.org/sets/show/15

Beer's Law

Varying concentrations of liquids like coffee, wine, soda, juice. Try to demonstrate Beer's Law by diluting your sample with 50% water, repeatedly.

• see examples here: http://publiclab.org/tag/beers-law

Venture off into the unknown.

See Spectral Analysis Techniques for an overview of different kinds of spectrometry.

Read about sample preparation of liquids and solids, and what kinds of sample containers to use: http://publiclab.org/wiki/spectrometry-sampling

Here's a list of things to do with your spectrometer, whether you're a teacher, a hobbyist, or a grassroots scientist. Also see Spectral Analysis Techniques for an overview of different kinds of spectrometry.

If you haven't yet, you should first calibrate your spectrometer with a CFL bulb](/wiki/spectral-workbench-calibration)

Please add your own, and include how much time it'll take, an estimate of the cost, etc.

Activities

Measure sodium lines

15-20 minutes, 1 candle, bunsen burner or propane burner

Read more at: http://publiclab.org/wiki/flare-spectroscopy-activity

Measure gases in the atmosphere

This is a good starting place, and a pretty easy spectrum to capture. Simply go outside during the day and point the spectrometer at an evenly illuminated part of the sky -- cloud or blue sky both work.

Even though air is pretty clear, pointing your spectrometer through miles of the atmosphere places enough molecules between your spectrometer and your light source (AKA the sun). Because of the sheer amount of molecules, you can see lines where CO2, O2, O3, and water vapor have absorbed part of the spectrum. These are known as the Frauenhofer lines.

For example, see: https://spectralworkbench.org/analyze/spectrum/913 (image below) and browse other examples here: https://spectralworkbench.org/tag/sunlight

Try different directions in the sky, towards and away from the sun. Where did you point your spectrometer to get the clearest absorption lines? Any idea why? Post a research note with your data and describe what you did.

Point it at different lights

Now let's try using manmade light sources. Go indoors and find some different kinds of light bulbs. Turn them on and point your spectrometer at them. Notice how much less of "the rainbow" you see compared to Flourescent - see the distinct emission lines of the mercury spectrum from mercury vapor in the lamps

(Flourescent specturm example image)

Neon lights

See these examples: http://publiclab.org/notes/cfastie/2-23-2013/neon

Lasers

Different colors of lasers - each of which will produce only a narrow band of colored light. Consider how to measure it without overloading the spectrometer with too much light.

What's next?

Try some more advanced tests. You'll need more supplies beyond what comes in the kit for these tests.

Detect sodium in table salt

With a candle and a small spray bottle of salt water, you can measure the emission spectrum of the sodium in table salt. Read more about this activity here

Advanced tests

Help advance this project -- please share your results if you manage to record data of one of these!

Measure other things in your kitchen

Try scanning a solution of alum? Mineral supplements dissolved in water? http://www.amazon.com/b/ref=dp_brw_link?node=3774271

Oils

Motor / Olive - compare two types of oil Garage version: get oil from your car

Laundry detergents

Try to detect blueing dyes in laundy detergent UV light:

• see JoshMC's post about this here: http://publiclab.org/notes/joshmc/4-28-2012/setup-uv-testing-specrtrometer
• and his results here: https://spectralworkbench.org/sets/show/15

Beer's Law

Varying concentrations of liquids like coffee, wine, soda, juice. Try to demonstrate Beer's Law by diluting your sample with 50% water, repeatedly.

• see examples here: http://publiclab.org/tag/beers-law

Venture off into the unknown.

Read about sample preparation of liquids and solids, and what kinds of sample containers to use: http://publiclab.org/wiki/spectrometry-sampling

Here's a list of things to do with your spectrometer, whether you're a teacher, a hobbyist, or a grassroots scientist. Also see Spectral Analysis Techniques for an overview of different kinds of spectrometry.

If you haven't yet, you should first calibrate your spectrometer with a CFL bulb](/wiki/spectral-workbench-calibration)

Please add your own, and include how much time it'll take, an estimate of the cost, etc.

Activities

Measure sodium lines

15-20 minutes, 1 candle, bunsen burner or propane burner

Read more at: http://publiclab.org/wiki/flare-spectroscopy-activity

Point it at the sky

This is a good starting place, and a pretty easy spectrum to capture. Simply go outside during the day and point the spectrometer at an evenly illuminated part of the sky -- cloud or blue sky both work.

Even though air is pretty clear, pointing your spectrometer through miles of the atmosphere places enough molecules between your spectrometer and your light source (AKA the sun). Because of the sheer amount of molecules, you can see lines where CO2, O2, O3, and water vapor have absorbed part of the spectrum. These are known as the Frauenhofer lines.

For example, see: https://spectralworkbench.org/analyze/spectrum/913 (image below) and browse other examples here: https://spectralworkbench.org/tag/sunlight

Try different directions in the sky, towards and away from the sun. Where did you point your spectrometer to get the clearest absorption lines? Any idea why? Post a research note with your data and describe what you did.

Point it at different lights

Now let's try using manmade light sources. Go indoors and find some different kinds of light bulbs. Turn them on and point your spectrometer at them. Notice how much less of "the rainbow" you see compared to Flourescent - see the distinct emission lines of the mercury spectrum from mercury vapor in the lamps

(Flourescent specturm example image)

Neon lights

See these examples: http://publiclab.org/notes/cfastie/2-23-2013/neon

Lasers

Different colors of lasers - each of which will produce only a narrow band of colored light. Consider how to measure it without overloading the spectrometer with too much light.

What's next?

Try some more advanced tests. You'll need more supplies beyond what comes in the kit for these tests.

Detect sodium in table salt

With a candle and a small spray bottle of salt water, you can measure the emission spectrum of the sodium in table salt. Read more about this activity here

Advanced tests

Help advance this project -- please share your results if you manage to record data of one of these!

Measure other things in your kitchen

Try scanning a solution of alum? Mineral supplements dissolved in water? http://www.amazon.com/b/ref=dp_brw_link?node=3774271

Oils

Motor / Olive - compare two types of oil Garage version: get oil from your car

Laundry detergents

Try to detect blueing dyes in laundy detergent UV light:

• see JoshMC's post about this here: http://publiclab.org/notes/joshmc/4-28-2012/setup-uv-testing-specrtrometer
• and his results here: https://spectralworkbench.org/sets/show/15

Beer's Law

Varying concentrations of liquids like coffee, wine, soda, juice. Try to demonstrate Beer's Law by diluting your sample with 50% water, repeatedly.

• see examples here: http://publiclab.org/tag/beers-law

Venture off into the unknown.

Read about sample preparation of liquids and solids, and what kinds of sample containers to use: http://publiclab.org/wiki/spectrometry-sampling

Here's a list of things to do with your spectrometer, whether you're a teacher, a hobbyist, or a grassroots scientist. Also see Spectral Analysis Techniques for an overview of different kinds of spectrometry.

Please add your own, and include how much time it'll take, an estimate of the cost, etc.

Activities

Measure sodium lines

15-20 minutes, 1 bunsen or propane burner

Read more at: http://publiclaboratory.org/wiki/spectrometry-activity-sodium-lines

Calibrate your spectrometer with a CFL bulb

5-10 minutes, a compact fluorescent lamp (CFL) and optionally a green laser pointer

(Base this one on http://publiclaboratory.org/wiki/spectral-workbench-calibration but include more explanation etc)

Check your calibration with a green laser, which should show up as 532 nanometers.

Read more at: http://publiclaboratory.org/wiki/spectrometry-activity-calibration

Measure an atmospheric absorption spectrum

5-15 minutes, the sky

Find the Frauenhofer lines:

https://spectralworkbench.org/tag/sunlight https://spectralworkbench.org/spectra/show/913 (especially good!)

Try different directions in the sky, towards and away from the sun. Where did you point your spectrometer to get the clearest absorption lines? Any idea why? Post a research note with your data and describe what you did.

Read more at: http://publiclaboratory.org/wiki/spectrometry-activity-atmospheric-absorption

-- add more activities here --

Here's a list of things to do with your spectrometer, whether you're a teacher, a hobbyist, or a grassroots scientist. Also see Spectral Analysis Techniques for an overview of different kinds of spectrometry.

Please add your own, and include how much time it'll take, an estimate of the cost, etc.

Activities

Measure sodium lines

15-20 minutes, 1 bunsen or propane burner

Read more at: http://publiclaboratory.org/wiki/spectrometry-activity-sodium-lines

Calibrate your spectrometer with a CFL bulb

5-10 minutes, a compact fluorescent lamp (CFL) and optionally a green laser pointer

(Base this one on http://publiclaboratory.org/wiki/spectral-workbench-calibration but include more explanation etc)

Check your calibration with a green laser, which should show up as 532 nanometers.

Read more at: http://publiclaboratory.org/wiki/spectrometry-activity-calibration

Measure an atmospheric absorption spectrum

5-15 minutes, the sky

Find the Frauenhofer lines:

https://spectralworkbench.org/tag/sunlight https://spectralworkbench.org/spectra/show/913 (especially good!)

Try different directions in the sky, towards and away from the sun. Where did you point your spectrometer to get the clearest absorption lines? Any idea why? Post a research note with your data and describe what you did.

Read more at: http://publiclaboratory.org/wiki/spectrometry-activity-atmospheric-absorption

-- add more activities here --

Here's a list of things to do with your spectrometer, whether you're a teacher, a hobbyist, or a grassroots scientist. Please add your own, and include how much time it'll take, an estimate of the cost, etc.

Activities

Measure sodium lines

15-20 minutes, 1 bunsen or propane burner

Read more at: http://publiclaboratory.org/wiki/spectrometry-activity-sodium-lines

Calibrate your spectrometer with a CFL bulb

5-10 minutes, a compact fluorescent lamp (CFL) and optionally a green laser pointer

(Base this one on http://publiclaboratory.org/wiki/spectral-workbench-calibration but include more explanation etc)

Check your calibration with a green laser, which should show up as 532 nanometers.

Read more at: http://publiclaboratory.org/wiki/spectrometry-activity-calibration

Measure an atmospheric absorption spectrum

5-15 minutes, the sky

Find the Frauenhofer lines:

https://spectralworkbench.org/tag/sunlight https://spectralworkbench.org/spectra/show/913 (especially good!)

Try different directions in the sky, towards and away from the sun. Where did you point your spectrometer to get the clearest absorption lines? Any idea why? Post a research note with your data and describe what you did.

Read more at: http://publiclaboratory.org/wiki/spectrometry-activity-atmospheric-absorption

-- add more activities here --

Here's a list of things to do with your spectrometer, whether you're a teacher, a hobbyist, or a grassroots scientist. Please add your own, and include how much time it'll take, an estimate of the cost, etc.

Activities

Measure sodium lines

http://publiclaboratory.org/wiki/spectrometry-activity-sodium-lines

Calibrate your spectrometer with a CFL bulb

(Base this one on http://publiclaboratory.org/wiki/spectral-workbench-calibration but include more explanation etc)

Measure an atmospheric absorption spectrum

Find the Frauenhofer lines:

https://spectralworkbench.org/tag/sunlight https://spectralworkbench.org/spectra/show/913 (especially good!)

Read more at: http://publiclaboratory.org/wiki/spectrometry-activity-atmospheric-absorption

-- add more activities here --