answered
answered


Author Comment Last activity Moderation
hikinghack "Would the amount of stuff collected by putting a nylon on my washer outweigh the amount it might contribute. I wonder how long it would last before..." | Read more » almost 5 years ago
warren "I've just collected a bunch of resources (a lot, but by no means comprehensive) at this topic page: https://publiclab.org/study-design Hope that h..." | Read more » about 5 years ago
guolivar " All the way in New Zealand we also use Gradko for all our passive tubes needs. " | Read more » about 5 years ago
Ag8n " You can buy the instruments with a microprocessor attached. All you have to do is take a syringe, put the liquid in the glass tube, and it will r..." | Read more » about 5 years ago
Bronwen " Oh wow, thanks! This is really helpful, I'll look into the tuning fork method. " | Read more » about 5 years ago
Ag8n " The reason multimeters aren't used for measuring the resistance of a solution is polarization. It's a fancy word, but by passing direct current t..." | Read more » about 5 years ago
Bronwen "I did a little browsing and so far tthe Ormantine link @warren shared is the only US supplier that comes up quickly (will keep looking), and I have..." | Read more » about 5 years ago
bsugar " Very likable indeed. Thanks, @warren! " | Read more » about 5 years ago
warren " that's right! " | Read more » about 5 years ago
bsugar " Yes! Perfect. Thank you! Speaking of a node, this is sort of the "base content" which can either be a wiki page or a research note, and a resea..." | Read more » about 5 years ago
warren "Hi @bsugar! 1) While there are answer models, question controllers, and question views, am I correct in understanding that a "question" is actual..." | Read more » about 5 years ago
warren " https://ormantineusa.com/diffusion-tubes/ is in the US! Louise Francis mentioned the lab they work with gets them from Gradko -- https://www.grad..." | Read more » about 5 years ago
MadTinker " @warren You know it's pretty sad when I don't catch things like this myself :smiley: I was referring to the raw data. " | Read more » about 5 years ago
warren "Hi, MadTinker, thanks for the info here. I was just wondering if you  meant that the Coqui itself was noisy, or if you're referring to noise in the..." | Read more » about 5 years ago
warren "Odour pollution has been consistently ignored by Governments when considering their environmental policies. This is despite it being the second mos..." | Read more » about 5 years ago
warren " http://mappingforchange.org.uk/projects/d-noses/ looks pretty interesting. @joe @stevie @xose just noting as we work on CSF planning! " | Read more » about 5 years ago
MadTinker "I've successfully used the DFRobot TDS/conductivity sensor combined with the a Mini-Pearl system. The Coqui was much too noisy. My Arduino setup wa..." | Read more » about 5 years ago
Arsath " Hi, nice question we can't say exactly how long it will last it depends upon the size and material of the balloon. you can refill the cylinder or ..." | Read more » about 5 years ago
falbriard " Here a software oriented approach. The following open source sample in Python language was developed for the blue & golden dress challenge, it..." | Read more » about 5 years ago
liz " From /wiki/formaldehyde: Symptoms of exposure to low concentrations of formaldehyde may include headache, nausea, throat and skin irritation, and..." | Read more » about 5 years ago
Mailan2021 " Please treat each other well. Everybody has difficulties that we have to overcome, do not know later but how to live each day happily. red ball " | Read more » over 5 years ago
Bronwen " There is an overview of some of they symptoms of formaldehyde exposure over on the OSHA website, here: https://www.osha.gov/laws-regs/regulations..." | Read more » over 5 years ago
cfastie "It will always be difficult to know for sure to what degree the red channel is contaminated by NIR. It might be worthwhile making an estimate. For ..." | Read more » over 5 years ago
Anice "Thank you for your immediate response Chris. This is very helpful! Regarding modifying the values in the red channel of the aerial photos, I have ..." | Read more » over 5 years ago