| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| mathew | "thanks for sharing, Nick! I didn't want to give away your secret. We're looking at several situations (like particles, H2S) where controlled airfl..." | Read more » | over 10 years ago | |||
| nshapiro | "Hi willie! Its a great project! I haven't read the Apte documentation, but mobile sensing does create some difficulties in terms of maintaining the..." | Read more » | over 10 years ago | |||
| willie | "Thanks Matt. This is definitely at its onset but I wanted to share the Apte inspiration. He did a number of things to ensure that the quality of th..." | Read more » | over 10 years ago | |||
| mathew | "That's pretty neat. How airflow will be controlled, as I would expect a moving vehicle to increase particulate measurements as a matter of the airf..." | Read more » | over 10 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 10 years ago | |||
| amysoyka | "This is a gravimetric sensor: In theory, don't PM particles have different weight, depending on atomic content. If you were to use a mesh to re..." | Read more » | over 10 years ago | |||
| donblair | "Hi folks! @stevie -- SORRY for the long delay in my response! It'd be great to set up a time to chat about this -- and bring in others who know m..." | Read more » | over 10 years ago | |||
| eustatic | "cool. i have a bunch of shinyeis and i'm working my way through learning arduino, but would this be faster? don, can you bring these to barnraisi..." | Read more » | over 10 years ago | |||
| warren | "I was wondering if, since the silica kind of redirects the light (a little like fiber optic), if you could illuminate it with a directional light d..." | Read more » | over 10 years ago | |||
| stevie | "Don any further development on this? Do you think a tool like this could be useful in this situation: http://publiclab.org/notes/stevie/05-23-2014/..." | Read more » | over 10 years ago | |||
| beadias | "alxmjo: Sorry about the delay in replying. Here is the digikey part number for the fan we use: 563-1111-ND. We checked out your DIY set up - glad t..." | Read more » | over 10 years ago | |||
| stevie | "Hi Willie! The next OpenHour (http://publiclab.org/wiki/openhour) is on Air Quality and Air Quality monitoring tools. Would love to hear about this..." | Read more » | over 10 years ago | |||
| mathew | "Thank you so much for the clarification David! I'll work that into our summaries. its been hard to get a handle on exactly what is meant by that s..." | Read more » | over 10 years ago | |||
| DavidMack | "@amysoyka The Powermag graphic portrays the PM fractions based on source sampling techniques used for power plant emission sampling. The source sa..." | Read more » | over 10 years ago | |||
| amysoyka | "Sure - the source for that image is the link in the comment above it by the way. I like super-visual. Apparently so does Stephen Hawking - who app..." | Read more » | over 10 years ago | |||
| warren | "Wow Amy that is a SUPER visual explanation! Want to add it (with credit and maybe a "not open licensed" notice) to the particulates page? http://pu..." | Read more » | over 10 years ago | |||
| jefffalk | "Let's try again. Gravimetric monitors capture particles and allow a weight of those captured to be determined. The distribution of aerodynamic diam..." | Read more » | over 10 years ago | |||
| amysoyka | "Oh & this picture is just awesome too!: " | Read more » | over 10 years ago | |||
| amysoyka | "This article explains in some detail about the point Matthew just made: http://www.powermag.com/blog/pm2-5-more-than-just-dust/ " | Read more » | over 10 years ago | |||
| stevie | "Love this project. Would you be interested in sharing the idea on an OpenHour? we have one on Air Quality scheduled for July 28th! " | Read more » | over 10 years ago | |||
| mathew | "yeah, l their comments are moderated. mine is still in the queue. " | Read more » | over 10 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 » | over 10 years ago | |||
| jefffalk | "As I understand it PM2.5 implies an aerodynamic diameter of 2.5 microns, straight forward with no "mean" involved. The "mean" enters with the epa ..." | Read more » | over 10 years ago | |||
| warren | "Are comments moderated there? I don't see your comment but it's a very important clarification to make. Thanks, Mathew! " | Read more » | over 10 years ago |