| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| jeffalk | "Some hopefully helpful comments: particulate matter in air is very different than lead concentration in soil. PM2.5 has a regional aspect. To see t..." | Read more » | over 6 years ago | |||
| CarloA | "One of the best experiences of my time at university when I have had the chance to do a internship at http://www.berthold-bio.com and learn a lot o..." | Read more » | over 6 years ago | |||
| Ag8n | "Wondered about that. The main plant Had a storm sewer. One of the small satellite plants had something labelled a storm sewer. But, when the sam..." | Read more » | over 6 years ago | |||
| WaterGeek | "Great work and super useful for citizen's looking to track the quality and state of open water. We've been looking into something like this for dri..." | Read more » | almost 7 years ago | |||
| MadTinker | "I would add the following: alkalinity, hardness, and perhaps ORP " | Read more » | almost 7 years ago | |||
| donblair | "Great question re: whether powering the Feather on the 3V line really does work well ... I don't really know. But: looking at a schematic for one ..." | Read more » | about 7 years ago | |||
| cfastie | "That's a really good point that the En pin on the Feather can disable the regulator and reduce power consumption. We need a table of all the featur..." | Read more » | about 7 years ago | |||
| donblair | "Thanks Chris -- this is incredibly useful. So important for folks to have a sense of the trade-offs and considerations when choosing solutions in ..." | Read more » | about 7 years ago | |||
| pdhixenbaugh | "Some other things -- certain types of industries can ask for an exemption from this permit if they claim they have zero stormwater pollution exposu..." | Read more » | almost 8 years ago | |||
| warren | "Just to clarify, #NPDES is the National Pollutant Discharge Elimination System " | Read more » | almost 8 years ago | |||
| stevie | "Yes! You can read about NPDES permit exemptions on this page "There are highly consequential exemptions listed in Section 402(l) of the Clean Wate..." | Read more » | almost 8 years ago | |||
| ajawitz | "Yes, I think up to the present, it was hard to see past all the spectacle with something like VR and much remains to be explored before its insight..." | Read more » | about 9 years ago | |||
| mathew | "I think 3D has a lot of relevance! one of my favorite public participation in planning exercises is Participatory 3D modeling, where everyone gathe..." | Read more » | about 9 years ago | |||
| WhiteRabbit | "Great post, and great comments too. Very informative! Thanks. " | Read more » | over 10 years ago | |||
| JSummers | "Very nice. I suspect that the limitation on accessible wavelengths is due to UV due to absorbance by the plastic optics and will not be improved by..." | Read more » | over 10 years ago | |||
| mathew | "Nathan McCorkle linked to a teardown of a commercial nanodrop: https://www.takeitapart.com/guide/66 an alternate to the droplet appears to be an a..." | Read more » | over 10 years ago | |||
| mathew | "this is super rad! I was bummed when I saw that the nanodrop was patented, so I looked at the patents. There are two earlier devices though: http:..." | Read more » | over 10 years ago |