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Thank you for this presentation! Check out this presentation on grassroots organizing @noah_ben_...
Hello Noah, I'm tagging the documentation fellows from the other fellowship teams in hopes they c...
Some vehicles, in most major cities, have to be tested annually for fuel emissions and mpg. Not a...
I am excited for us to create our project page!
Excited to work on this project as the Environmental Policy Fellow!
Lichen1.docx Hopefully, this will attach.
I tried using a dashcam for something similar. I had one in old car, but didn't need it in my new...
We have a community Purple Air monitor in our area. Highly recommended!
Amazing article. Any news or updates you'd recommend for next steps? The article is 3 years old s...
I'd recommend starting off with high efficiency appliances. There will be Energy Star, "Most Effi...
In this area, lichens aren't common. Attached is a rough draft using lawn clippings to set up an...
Great ideas! I'll add a percentage column to the table to better highlight how much of the month ...
Thank you for sharing updates on this project! Is the team planning to highlight specific times w...
Hello, Did you make any additional progress with this? I'm trying to do the same thing and maybe ...
I did this! Hi! Long time has passed since this original post. I was doing some in field measurem...
Reading a little more I found that you could change the frequency of the PWM in arduino. I did no...
Hi! good question! The frequency of PWM of arduino is about 500hz. Is that enough for conductivit...
I don’t understand why the responsibility for this falls only on the citizens, when it’s real to ...
If using an instrument like a hunter colorimeter, be careful. There is the Hunter L,a,b scale. ...
Little change here. Most water or liquid measurements are on transmitted or absorbed light.
Its very easy to get these two instruments confused. If you are measuring color in industry(as i...
Thanks for sharing the air quality data.
The tungsten lamp remarks only apply to the 660 nm red lines.
Best bet- use an old fashioned tungsten lamp. Not a LED claiming to be a tungsten lamp. An LED ...
Looking into the 660 nm lines. It's not that LEDs don't exist for 425 nm region. They do. But ...
There are 3 in 1 flashlights ( blue, white, and red) that would be good for this application- as ...
If you are using the public lab spectrometer, a light source for around 400 nm is needed. It loo...
A test of this method might be to use lawn clippings and run it through the procedure. The idea...
Another, more current option , is to use a coffee grinder. With the temperature issues this mate...
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fongvania commented on Video Tutorial: Mobile Phone as Colorimeter about 2 years ago
Good to know about CIE vs Hunter, I didn't even realize there were two different systems. Since ...