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Air Quality

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Air Quality

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Air Quality

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Air Quality

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airquality

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Barnraising Texas 2019

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Soil Sampling Toolkit

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cfastie commented on Question: Determining Plant-Health

Those two photos have some good plant health information in them, especially the second one of tr...

26 comments » almost 3 years ago

warren commented on Ultra micro cuvette tests, UV LED and low-temperature fluorescence

Powered on one of these, with a dial: http://www.watterott.com/de/Wattuino-Nanite85?x56e76=f63b1c...

7 comments » almost 3 years ago

warren commented on Ultra micro cuvette tests, UV LED and low-temperature fluorescence

Here's the big list of UV LEDs below 405 nm

7 comments » almost 3 years ago

warren commented on Ultra micro cuvette tests, UV LED and low-temperature fluorescence

Crap, those are only in quantities of 400+ or 1000+. I'll keep looking.

7 comments » almost 3 years ago

warren commented on Ultra micro cuvette tests, UV LED and low-temperature fluorescence

@tonyc @ygstcu - looking at higher powered LEDs, I've found: ~$4.40: http://www.digikey.com/prod...

7 comments » almost 3 years ago

warren commented on An "open open hardware" development cycle

I've just posted a first draft "Contributing to Public Lab Hardware" here: https://publiclab.org/...

4 comments » almost 3 years ago

claf New Contributor commented on XbeePal ready for monitoring

Hello @JacobMatz, In searching for air quality sensors it seems most of them are intended for ind...

9 comments » almost 3 years ago

someHerrings New Contributor commented on Planning for Spectral Workbench 2.0

It would be nice if the plots could be re-scaled to accentuate the peaks without having to distor...

24 comments » almost 3 years ago

Kiranay New Contributor commented on Question: Determining Plant-Health

From the above two images how can i detect the plant condition? @cfastie

26 comments » almost 3 years ago

Kiranay New Contributor commented on Question: Determining Plant-Health

@cfastie

26 comments » almost 3 years ago

Kiranay New Contributor commented on Question: Determining Plant-Health

is this a better image? can i evaluate the accurate results from it? @cfastie

26 comments » almost 3 years ago

semitones commented on Oil testing kit Beta programme - Scanning the unknown & the not so well known…

@warren raman scattering is usually a very weak effect, and not easily seen. The stokes and anti ...

4 comments » almost 3 years ago

Alastair commented on pole mapping kit ideas

what would make a suitable pole and bracket for a DSLR (D610 with a 28-105mm zoom or an old Nikko...

5 comments » almost 3 years ago

icarito commented on Very clear spectrum through pineapple

Here's testing email again!

8 comments » almost 3 years ago

ajawitz commented on Options for Low-Cost LIDAR

It looks like somebody finally did do some point cloud mapping work with the LidarLITE- http:/...

9 comments » almost 3 years ago

Matej commented on Separating Oil from Water by Freezing the Water

HI Guys, Thanks for your interesting comments! Jeff: I will certainly try to do that. In general...

12 comments » almost 3 years ago

chrisbartley New Contributor commented on Speck particle monitor

@ledi001 All the visualization software is custom stuff we developed at the CREATE Lab. The gra...

16 comments » almost 3 years ago

ledi001 commented on Speck particle monitor

Great idea and great monitoring! Please can you post some information about the software you use ...

16 comments » almost 3 years ago

msysinfo commented on Using the Spectroscope for Analysis of Concentration (Beer's Law)

I need to measure oil concentration in a water mixture. Can a SPECTROMETER be used to measure the...

14 comments » almost 3 years ago

ethanbass commented on Question: Is there a way to delete a set of spectra from the spectral work bench?

That button appears to me when I'm on the page for a spectrum, but not when I visit the page for ...

6 comments » almost 3 years ago

mathew commented on ImageJ exporting data into Excel: Used for Analysing Images of particulate matter

nice! thanks for documenting the Excel procedures Paul! good job on formatting too!

1 comments » almost 3 years ago

mathew commented on Separating Oil from Water by Freezing the Water

Awesome technique! the look of the 5w-30 reminds me of thawed out frozen diesel fuel. I think th...

12 comments » almost 3 years ago

mathew commented on Slit holder for Desktop Spectrometer

one of the challenges of the slit holder is getting it out towards the edge of the spectrometer--...

4 comments » almost 3 years ago

warren commented on Separating Oil from Water by Freezing the Water

Hi matej - are the differences in the 5w30 just by visual inspection or in the spectrum as well?

12 comments » almost 3 years ago

warren commented on a fish name d will depue

Hi! I'm wondering if you could add some more detail and context to your posts, because as they ar...

1 comments » almost 3 years ago

warren commented on Separating Oil from Water by Freezing the Water

The embeds are working again. Thanks for your patience!

12 comments » almost 3 years ago

semitones commented on Making a DIY conductivity probe from a water bottle and metal screws

@donblair is there text that goes along with this too?

6 comments » almost 3 years ago

semitones commented on Riffle Datalogger: quick development snapshot

This is really cool! I just found this project in an attempt to see what open source projects exi...

1 comments » almost 3 years ago

JacobMatz commented on XbeePal ready for monitoring

Hi @claf I'm wondering if you have any updates on this work? I'm glad that you are incorporating...

9 comments » almost 3 years ago

phoenix-202-freeway-1

by over 6 years ago | 0 | | 2

phoenix-202-freeway

by over 6 years ago | 0 | | 2

Laser particulate sensor prototype test

by warren over 6 years ago | 5 | | 2

tms-test

by over 6 years ago | 0 | | 2

Spectral sensing for metals

by Shannon over 6 years ago | 0 | | 2

Galena Park Community "treasure maps"

by Shannon over 6 years ago | 0 | | 2

Annotated maps roundup

by warren over 6 years ago | 7 | | 0

NDVI out of the shadows

by cfastie over 6 years ago | 1 | | 0

Commercial UAV near-infrared aerials

by warren over 6 years ago | 1 | | 0

Leads on mass produced giant mylar balloons

by warren over 6 years ago | 2 | | 3

How to install CHDK

by cfastie over 6 years ago | 0 | | 1

Using Kites as Atmospheric Wind-speed Meters

by mathew over 6 years ago | 0 | | 2

Water testing card idea: fluoride

by liz over 6 years ago | 0 | | 0

mapping parties in NYC map invasive species

by gonzoearth over 6 years ago | 0 | | 0

Flight-ready MK111 timer

by cfastie over 6 years ago | 0 | | 0

Public Lab community newsletter 5.4.12

by Shannon over 6 years ago | 0 | | 2

2 9v batteries to drive 555 timer

by warren over 6 years ago | 0 | | 2




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Air Quality

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Air Quality

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Air Quality

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airquality

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Barnraising Texas 2019

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sandbox-sitemap

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Soil Sampling Toolkit

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air-quality agriculture balloon-mapping legal microplastics mining noise oil-and-gas particulate matter sensors stormwater waste water-quality