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difficulty:medium
difficulty:medium


Author Comment Last activity Moderation
imdad "This is Very Informative Information About This is Very informative Information About Electrical Energy Definition " | Read more » over 3 years ago
imdad "This is Very Informative Information About This is Very informative Information About Electrical Energy Definition " | Read more » over 3 years ago
hannanahmad "Your points make sense, but still there are only a few building management systems that can comply with old HVAC equipment. Timing of pumps can be ..." | Read more » over 3 years ago
iolanthe82 "@iolanthe82 awards a barnstar to abdul for their awesome contribution! " | Read more » over 5 years ago
nshapiro "Hi @indy if you're based in Indiana, as your name hints, you can report your symptoms to the stat DOH and they might come out and test for free. In..." | Read more » almost 6 years ago
Indy "Hi, my search for formaldehyde testing brought me to this article. I'm wondering if you could help me with some advice - I'd appreciate it. I'm ve..." | Read more » almost 6 years ago
warren "Oh, also just for ref, the idea i posted is here: https://publiclab.org/notes/warren/02-09-2017/a-kit-to-design-your-own-formaldehyde-experiment " | Read more » almost 6 years ago
Dave-O "You're welcome, @nshapiro ! Is this the same EPA approved method that you used? https://www3.epa.gov/ttnamti1/files/ambient/airtox/to-11ar.pdf And ..." | Read more » almost 6 years ago
nshapiro "Thanks, @Dave-O ! We did some side by side testing of this method next to an EPA approved method and we found these tubes to be cross contaminated ..." | Read more » almost 6 years ago
sarasage "Fantastic post! Would love to replicate this! " | Read more » about 6 years ago
warren "Or perhaps the lead image here, which uses the #19 Rosco "fire" filter currently in the Mobius Infragrams: https://publiclab.org/notes/mathew/04-30..." | Read more » over 6 years ago
warren "This is so great, Abdul!!! One note -- the lead image shows a blue-filtered image, whereas the Mobius uses a red-filtered sensor. So perhaps the l..." | Read more » over 6 years ago
liz "Hey @kevinvivergy it's so great to hear from you! Here's the blue tagging assistance box that you will see when you click on "click here": ...W..." | Read more » over 6 years ago
kevinvivergy "Can do @liz, any in particular you would recommend? Not familiar with the system! " | Read more » over 6 years ago
liz "Hi @kevinvivergy, i have just tagged this note as an activity that others could try as well. I did this by adding the tag activity:open-air. If you..." | Read more » over 6 years ago
kevinvivergy "Thanks @drapoli! Yeah, when I built this thing I had not heard of Purple Air, I am really interested to learn more about it. The AQMD site has done..." | Read more » over 6 years ago
drapoli "Great discussion and a lot of good ideas. The AQ-SPEC group (www.aqmd.gov/aq-spec) has published results on several PM sensors other than the Dylos..." | Read more » over 6 years ago
kevinvivergy "Ahhh I see. And it looks like both ways showed that there is a big plume of particulates coming out of the rock quarry that dissipated over the rig..." | Read more » almost 7 years ago
mathew "the authors did two levels of survey-- first the 6 minute 'snapshots' and then they used that to determine where to place passive monitors for long..." | Read more » almost 7 years ago
kevinvivergy "Wow that is super interesting. That would definitely cover the variation over space... but what about if the levels vary over time in each particul..." | Read more » almost 7 years ago
mathew "hah! school networks are always a problem. I posted a note recently on hotspot identification, the first stage of which involved a systematic surv..." | Read more » almost 7 years ago
kevinvivergy "Thanks @mathew! Has certainly been an adventure. Only consistent issue has been school internet security protocols- they treat the Raspberry Pi as ..." | Read more » almost 7 years ago
mathew "I'm revisiting your note, just want to say again how cool this is! great to see you're still up and posting data. " | Read more » almost 7 years ago
straylight "thanks ygzstc, that makes sense. I think that the approximation that relative intensity measured from the scope can be used in place of the log rel..." | Read more » almost 7 years ago