| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| maxliboiron | "Yes!! This will work for plastic forensics! Especially as the light comes from above rather than below (most plastics are opaque). The resolution a..." | Read more » | over 5 years ago | |||
| warren | " OK, i was able to build one using @jiteovien's diagram; I remember at the Nueva School before MakerFaire last year, some of the kids were able to ..." | Read more » | over 5 years ago | |||
| maxliboiron | "Looks about right to me. " | Read more » | over 6 years ago | |||
| jiteovien | "Thanks for the reply Max! So, what we are really looking at for conversion is adding a secondary light source as seen in the image below. " | Read more » | over 6 years ago | |||
| maxliboiron | "In a perfect world, you wouldn't be looking through plexi at your marine plastic because plexi has characteristics of plastic (scratches, reflectio..." | Read more » | over 6 years ago | |||
| warren | "A bit more info on this back at this question from some months back: https://publiclab.org/questions/stevie/12-08-2017/could-the-raspberry-pi-micro..." | Read more » | over 6 years ago | |||
| warren | "This looks great, and AWESOME diagram! @maxliboiron do you think we have to flip the dissecting scope so that the materials can be on the same side..." | Read more » | over 6 years ago | |||
| warren | " " | Read more » | over 6 years ago | |||
| warren | " " | Read more » | over 6 years ago | |||
| stevie | "This post walks through collecting a sample, and some examples. They also reference this resource for collecting dust samples: http://www.funsci.co..." | Read more » | over 6 years ago | |||
| warren | "Added a follow-up to collect some reference images of respirable silica particles, here: https://publiclab.org/questions/warren/02-22-2018/what-do-..." | Read more » | almost 7 years ago | |||
| warren | "Added a follow-up to collect some reference images of respirable silica particles, here: https://publiclab.org/questions/warren/02-22-2018/what-do-..." | Read more » | almost 7 years ago | |||
| warren | "Note these prior questions related to this one: https://publiclab.org/notes/mathew/10-07-2016/sizing-images-at-portland-science-hackday And this,..." | Read more » | almost 7 years ago | |||
| warren | "This blog is by someone who works for an energy company, helping to mine frac sand, and publishes a book called "Finding Frac Sand" -- yikes. The ..." | Read more » | almost 7 years ago | |||
| warren | "TXSharon posted this note about photographs of sand dust from a sandbox: http://www.texassharon.com/2012/07/31/take-this-nice-fracking-sand-for-yo..." | Read more » | almost 7 years ago | |||
| Ag8n | "Ok, are talking about the difference between amorphous silica and crystalline silica? The amorphous is generally safe and crystalline is generally..." | Read more » | almost 7 years ago | |||
| warren | "@DavidMack posted on sticky pads a while back on the #particle-sensing page: Essentially tape, sticky pads have the advantage of capturing a recor..." | Read more » | almost 7 years ago | |||
| stevie | "One idea from @dswenson that came from the open call yesterday was to use materials like sticky yellow flytraps like these " | Read more » | almost 7 years ago | |||
| warren | "Reading through Mathew's note, i don't see a clearly labeled one, but I imagine we could find one online somewhere, or in a peer-reviewed paper? " | Read more » | almost 7 years ago | |||
| warren | "Gretchen, is there an example image (showing rounded and jagged edges) we can use as a reference to compare to, when looking at images of dust? " | Read more » | almost 7 years ago | |||
| stevie | "When we were in WI @gretchengehrke, @mathew, and I were visiting some friends and we took a sample from a window at their house. The house window w..." | Read more » | almost 7 years ago | |||
| warren | "Hi, Gretchen - what specific additional work based on Mathew's would help to answer this question? Can his proposed test using a particle of known ..." | Read more » | about 7 years ago | |||
| warren | "Also see https://publiclab.org/notes/mathew/10-07-2016/sizing-images-at-portland-science-hackday ! And this, where he tries to size a known diamet..." | Read more » | about 7 years ago | |||
| warren | "Also see https://publiclab.org/notes/mathew/10-07-2016/sizing-images-at-portland-science-hackday ! And this, where he tries to size a known diamet..." | Read more » | about 7 years ago |