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| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| kgradow1 | "Comparative sizes of common particles: http://www.engineeringtoolbox.com/particle-sizes-d_934.html " | Read more » | over 5 years ago | |||
| partsandcrafts | "Second hit on the question "How small are respirable particles?" Not specific to smoke, but useful context: http://www.who.int/occupational_health..." | Read more » | over 5 years ago | |||
| guolivar | "Smoke particles (and by smoke I mean combustion products) come in sizes all the way down to 1nm (0.001micron) and in shapes that make it very trick..." | Read more » | over 5 years ago | |||
| warren | "Geoff from NASA Goddard found a good resource here: https://www.fs.fed.us/pnw/pubs/pnw_gtr251.pdf Apparently under 1 micron! Very small. " | Read more » | over 5 years ago | |||
| cfastie | "Alex, The two filters are probably the same. The #19 filter will work best if the you do a custom white balance on the camera before you take photo..." | Read more » | over 7 years ago | |||
| christad92 | "Thanks. I'll check those links out.I hope they will be of great help " | Read more » | over 8 years ago | |||
| Nashblackcat | "http://www.jhnewsandguide.com/news/cops_courts/amerigas-leak-grew-fast/article_5446c51b-aa2e-5a3d-b07d-985967fc052e.html This is one recent news i..." | Read more » | over 8 years ago | |||
| Nashblackcat | "The stations themselves are not the only hazard : http://www.csb.gov/little-general-store-propane-explosion/ You would be amazed about how lacking..." | Read more » | over 8 years ago |