| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| mathew | "awesome! " | Read more » | almost 9 years ago | |||
| mathew | "I don't see any images of them running the device-- seems like they demoed it under glass in January. it looks like a non-functional prototype. is..." | Read more » | almost 9 years ago | |||
| mathew | "@jefffalk @marlokeno interested in your thoughts on this plan. " | Read more » | almost 9 years ago | |||
| mathew | "That candle protector is a great way to picture how this sensor works! I think the tiny grate on top of the sensor itself does something similar. ..." | Read more » | over 9 years ago | |||
| mathew | " Usually gravimetric tests are done on particles after they have been captured in the field. Given environmental vibrations, it sounds tough to pi..." | Read more » | over 9 years ago | |||
| mathew | "I've been operating on the assumption that the EPA/ISO standard = PM2.5. I guess this is an etymology question. which came first: PM2.5 or the EP..." | Read more » | almost 10 years ago | |||
| mathew | "maintenance is an issue-- look at these dylos monitors in China building up particulates http://aqicn.org/faq/2013-10-21/dylos-air-particule-conter..." | Read more » | almost 10 years ago | |||
| mathew | "@donblair-- the author doesn't seem to understand the terminology in use. The conclusions are based on a misunderstanding of what PM2.5 actually m..." | Read more » | almost 10 years ago | |||
| mathew | "From the literature on stickypads, concentrations of particles smaller than the resolution of the scanned image can be roughly estimated by albedo ..." | Read more » | almost 10 years ago | |||
| mathew | "you can always try Fluxtream, although I don't know how you get the data in there on windows. actually I do-- make Don do it! " | Read more » | almost 10 years ago | |||
| mathew | "do you want me to make an .xls file from the .odf file? i'm not sure the date translation will work, but the dates are int he odf I made. " | Read more » | almost 10 years ago | |||
| mathew | "right-- and with an SLR the image capture would be much faster than waiting for a scanner. " | Read more » | almost 10 years ago | |||
| mathew | "Thanks to Bea at CMU CREATELab for the blog cross-post ! My followup post on moving Speck data into Fluxtream to visualize data. " | Read more » | almost 10 years ago | |||
| mathew | "I found a scanner, the Canon 9000F and 9000F MKII, with an optical resolution of 9600dpi and an interpolated resolution of 19200dpi, or pixels 2.6μ..." | Read more » | almost 10 years ago | |||
| mathew | "Ok. Updated. the situation is better than I thought. A 4800dpi scanner could definitely give straight PM10 measurements, possibly with identifica..." | Read more » | almost 10 years ago | |||
| mathew | "Ok-- apparently my math is all wrong. I thought DPI was dots per square inch. this is completely wrong. it is dots that can be placed in a line o..." | Read more » | almost 10 years ago | |||
| mathew | "@eustatic in a bit, lets get something working first ;-) @warren A smartphone would definitely work for identifying silica! its just a matter of m..." | Read more » | almost 10 years ago |