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Soil Testing Toolkit

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谷仓聚会 Barnraising Guangzhou, China

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PurpleAir

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kanarinka commented on Ground Truth in the Negev-Naqab Desert, Israel

This is an amazing project Hagit. You all might know of or be interested in the three-volume Inui...

1 comments » over 2 years ago

khufkens commented on Jungle Rhythms - find the rhythm of tropical trees

Thanks for the contributions as well!!

3 comments » over 2 years ago

khufkens commented on Jungle Rhythms - find the rhythm of tropical trees

thanks @matthew, seems like you have to include http otherwise the markup thinks it's an internal...

3 comments » over 2 years ago

warren commented on PLab Spectrometer Gain-Correction

Hi, Dave - I'm circling back because I believe the new subtract: feature in Spectral Workbench 2....

25 comments » over 2 years ago

mathew commented on Jungle Rhythms - find the rhythm of tropical trees

it looks like your links aren't heading straight to JungleRythms.org. neat project! I tried out ...

3 comments » over 2 years ago

EdMallon New Contributor commented on An Arduino Based UnderWater Sensor Platform

One of my high school teacher friends mentioned that he wanted add Arduino based projects to his ...

47 comments » over 2 years ago

mathew commented on Question:Can diy infrared imaging be used for natural gas leaks as the EDF did in So California

I screen-capped this graph of different sensors and their sensitivities and put it in this commen...

7 comments » over 2 years ago

mathew commented on Question:Can diy infrared imaging be used for natural gas leaks as the EDF did in So California

FLIR is looking in a narrow band-- 3200-3400nm -- where these hydrocarbons are most absorptive. ...

7 comments » over 2 years ago

Thomas12345 commented on Use of Quadcopter to Document Rock Alignments and Geoglyphs

Hey, if you are still looking for more information how to get good camera, here's the good resour...

5 comments » over 2 years ago

khufkens commented on Question:Can diy infrared imaging be used for natural gas leaks as the EDF did in So California

http://www.flir.com/uploadedFiles/CVS_Americas/Cores_and_Components_NEW/Resources/flir-lepton-dat...

7 comments » over 2 years ago

cfastie commented on Question:Can diy infrared imaging be used for natural gas leaks as the EDF did in So California

That's excellent. Maybe a good order of magnitude cheaper than a FLIR camera. There seems to be ...

7 comments » over 2 years ago

khufkens commented on Question:Can diy infrared imaging be used for natural gas leaks as the EDF did in So California

@marlokeno It's not cheap (although it's $100 than it used to be, mmm) but it sure is DIY and wit...

7 comments » over 2 years ago

cfastie commented on On being doomed to repeat historical lithographs

When the kmz file (attached in the previous comment) is loaded in Google Earth you must click "Ex...

3 comments » over 2 years ago

eustatic commented on Some Gulf Coast Use Cases for the Oil Testing kit in 2015

Ha. These questions are painful.

10 comments » over 2 years ago

cfastie commented on On being doomed to repeat historical lithographs

Lots of people have used MapKnitter to place images that are not aerial photos they have taken. S...

3 comments » over 2 years ago

gretchengehrke commented on Coal Ash and Citizen Monitoring

Conductivity readings would indicate the presence of ions, but since there is so much calcium, an...

3 comments » over 2 years ago

gretchengehrke commented on Some Gulf Coast Use Cases for the Oil Testing kit in 2015

Fabulous post, Scott. Thanks! For each of these situations, would the process be to try to convin...

10 comments » over 2 years ago

khufkens commented on The accidental raspberry pi spectrometer: first light

On the raspberry pi camera there is no real focus, so you either unscrew the lens assembly (googl...

2 comments » over 2 years ago

ajawitz commented on On being doomed to repeat historical lithographs

@cfastie- Have you or others done and/or documented any other work with historic aerial imagery?...

3 comments » over 2 years ago

cosettespafford New Contributor commented on Spectrometry

Thank you, Chris! Your explanation really helped! Cosette

2 comments » over 2 years ago

cosettespafford New Contributor commented on The accidental raspberry pi spectrometer: first light

Can you let me know how you focused your camera? I just finished my spectrometer yesterday; I can...

2 comments » over 2 years ago

shubham commented on Fat percent in milk

In the commercial spectrometer measuring milk fat%, the range is mostly between 600-1100nm. Could...

10 comments » over 2 years ago

pdhixenbaugh commented on Riffle CT (Conductivity & Temp) Beta Design: Electronics, Enclosure, Probes, Data Collection

Would it be possible to have a variant using standard batteries? It's not too big of a deal to or...

16 comments » over 2 years ago

cfastie commented on How do I set a custum white balance of the NoIR modulo cam?

The Bayer filters determine how wavelengths are separated into the three color channels. This is ...

25 comments » over 2 years ago

poo commented on How do I set a custum white balance of the NoIR modulo cam?

this green photo don't Relevance to Bayer pattern Mr. @cfastie ?

25 comments » over 2 years ago

eustatic commented on A proposal for a way to remediate indoor silica dust

I'm unsure about the claims, but at least one vaccuum company advertises that its unit can 'wash'...

10 comments » over 2 years ago

marlokeno commented on A proposal for a way to remediate indoor silica dust

Thanks to Chris for some lucid suggestions. I have some questions, and ideas for improvements aft...

10 comments » over 2 years ago

cfastie commented on Tales from the Cryptogam

This is very good data -- two independent reports that moss grows under deciduous forests in Swed...

3 comments » over 2 years ago

cfastie commented on A proposal for a way to remediate indoor silica dust

If bubbling room air through an aquarium removes some dust from the air (including some silica du...

10 comments » over 2 years ago

marlokeno commented on A proposal for a way to remediate indoor silica dust

Thanks for sharing your expertise, @martenskram. I didn't know that bubblers were inefficient und...

10 comments » over 2 years ago

Canon A2200 NIR conversion

by nedhorning almost 6 years ago | 18 | | 0

Interest in Hidrogen Sulfide Sensing

Post an answer

Question by fernandolunav New Contributor almost 6 years ago | 3 | | 0

Super video of thermal infrared spectroscopy

by warren almost 6 years ago | 1 | | 0

Configure Spectralworkbench???

by Tom_H about 6 years ago | 2 | | 0

Public Lab community newsletter 9.21.12

by warren about 6 years ago | 0 | | 0

was wondering

by cbullock New Contributor about 6 years ago | 1 | | 2

Raspberry Pi-in-the-sky

by donblair about 6 years ago | 5 | | 1

Infrared camera test - film types

by Cindy_ExCites about 6 years ago | 9 | | 0

intensity calibration

by Tom_H about 6 years ago | 29 | | 0

Limited "Steampunk edition" spectrometer - photos

by warren about 6 years ago | 4 | | 0

cannot use online software

by beckman about 6 years ago | 1 | | 0

Public Lab community newsletter 9.16.12

by Shannon about 6 years ago | 0 | | 2

Remote temperature sensing

by cfastie about 6 years ago | 2 | | 3

MapKnitter.org workshop

RSVP

Event by liz about 6 years ago | 0 | | 0

As Above So Below: Higher E+D workshop

by liz about 6 years ago | 0 | | 2

Green Slice- Lower 9th Ward

by GroundworkNola about 6 years ago | 1 | | 2

2012 Public Lab barn raising invitation

by Shannon about 6 years ago | 0 | | 0

Spectrometry update on IdeaLab blog

by warren about 6 years ago | 0 | | 0

call it Delta, maybe

by astoicof about 6 years ago | 2 | | 4

Art Environment Action!

by liz about 6 years ago | 0 | | 2

New servers for a long-term PLOTS data archive

by warren about 6 years ago | 2 | | 2

Cuvette/test-tube holder possible

by beckman about 6 years ago | 1 | | 0

Public Lab community newsletter 9.7.12

by Shannon about 6 years ago | 0 | | 2

First Experiment Analyzed

by megan about 6 years ago | 2 | | 1

Urban Systems Symposium

by liz about 6 years ago | 0 | | 2




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