| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| cfastie | "A GoPro Hero might weigh 150 grams with the protective case. A Hero Session weighs half that. On a static KAP rig the total weight will be 150g to ..." | Read more » | over 6 years ago | |||
| liz | "Adding another idea, perhaps a solar balloon https://publiclab.org/tag/solar-balloon might be interesting for your use case? @mathew makes these, f..." | Read more » | over 6 years ago | |||
| Kshatrya | "If you are looking for specific metals, there should be some reagent that will precipitate or indicate that metal. But if you're looking for all th..." | Read more » | over 6 years ago | |||
| Kshatrya | "If you are looking for specific metals, there should be some reagent that will precipitate or indicate that metal. But if you're looking for all th..." | Read more » | over 6 years ago | |||
| Ag8n | "I see what you mean. The analysis I did was a PNA (polynuclear aromatic hydrocarbon analysis). It's closely related to PAHs. It's still listed on..." | Read more » | over 6 years ago | |||
| Ag8n | "There is a standard method for PAH analysis in carbon black. It uses soxhlet extraction and visible analysis ( sorry I can't give you the details..." | Read more » | over 6 years ago | |||
| zengirl2 | "@stevie Wow, that is exciting. I'm almost picturing pomander balls of this stuff hanging around. " | Read more » | almost 7 years ago | |||
| stevie | "Here's an answer coming in from Ann Marie Carlton who works with an Atmospheric Multiphase Chemistry Research Group at University of California, Ir..." | Read more » | almost 7 years ago | |||
| Bronwen | "Hi @adamsanta, yes! We do ship some tape and a DVD with the lego kit. " | Read more » | almost 7 years ago | |||
| Ag8n | "I like energy dispersive X-Ray florescence (EDXRF). It's non-distructive, low power, and relatively cheap. On the down side, it's hard to calibra..." | Read more » | almost 7 years ago | |||
| warren | "Awesome!!! " | Read more » | almost 7 years ago | |||
| MadTinker | "Ran across this article that discusses at a high level the relationship between salinity, TDS, and conductivity. Reference . It specifically mentio..." | Read more » | almost 7 years ago | |||
| Bobibi | "Yes. Biochar in manure, compost, and anaerobic digesters helps eliminate odors as well as reduce greenhouse gas emissions. " | Read more » | almost 7 years ago | |||
| cfastie | "If that model is modified to allow for the components and the ribbon, it should be done so the new underside surfaces are not horizontal. FDM print..." | Read more » | almost 7 years ago | |||
| stefannibrasil | "Hi, @warren @liz! I created a page > https://publiclab.org/wiki/call-for-papers I believe it can work out that way. Let me know what do you thin..." | Read more » | almost 7 years ago | |||
| warren | "Although that's not the right piece -- we actually need the wider adapter; i think Richard was just saying he thought the camera interface was modi..." | Read more » | almost 7 years ago | |||
| warren | "Richard from OpenFlexure has proposed this piece, although I'm not sure it's compatible with both cameras -- https://github.com/rwb27/openflexure_m..." | Read more » | almost 7 years ago | |||
| zengirl2 | "For a project I was looking at toxins in water and read about sunflower stalks being used for this purpose. There was even a startup in NJ, but not..." | Read more » | almost 7 years ago | |||
| omarormachea | "Dear @TeacherHelen, you can use the following free software created for android platforms, you can get information about it, from the calibration a..." | Read more » | almost 7 years ago | |||
| Bronwen | "Hi @TeacherHelen, nice to meet you! The Papercraft Spectrometer wiki is a good place to start. There you will find links to instructions for calibr..." | Read more » | almost 7 years ago | |||
| gretchengehrke | "Hmm. This is surprising to me too. Iron-rich clay can readily adsorb arsenic under oxygen-rich conditions (this is actually the root of Bangladesh,..." | Read more » | almost 7 years ago | |||
| MadTinker | "Confirm? Hmmm... well, I have two data points, both of which coincidently use the same multiplier on EC to get TDS. From discussions with folks wh..." | Read more » | almost 7 years ago | |||
| warren | "@stevie - maybe this could at some point be a good kit for students to use? Pretty cool, @MadTinker !! Interestingly the TDS pen also converts to ..." | Read more » | almost 7 years ago | |||
| MadTinker | "An quick update: The TDS sensor from DFRobots performs as describes. Very easy to connect to the MiniPearl logger. In general, it collects a voltag..." | Read more » | almost 7 years ago |