| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| amirberAgain | "Another point refers to here is the use of cross polarization, I guess that part of the importance of it is that some materials either have or don'..." | Read more » | almost 7 years ago | |||
| amirberAgain | "It looks like, at the least in part this is an open resource, some parts do require free registration see more here: http://www.mccroneatlas.com/ " | Read more » | almost 7 years ago | |||
| warren | "Great idea. There could be stages of analysis, narrowing in progressively. +1! " | Read more » | almost 7 years ago | |||
| warren | "I also posted a question over here to try to collect images from various sources of respirable silica for use as a reference in our #basic-microsco..." | Read more » | almost 7 years ago | |||
| Ag8n | "It gives a range of magnifications. As for sample prep- "samples were mounted in aroclor 5442 or the equivalent Carville refractive index liquid 1..." | Read more » | almost 7 years ago | |||
| gretchengehrke | "Also, its interesting that cristobalite is rounded. I will look in the literature to see if there is a relationship between cristobalite and silico..." | Read more » | almost 7 years ago | |||
| gretchengehrke | "I'm glad you brought this up, @Ag8n! @Mathew did some work with polarimetry too. See this research note: https://publiclab.org/notes/mathew/05-21-2..." | Read more » | almost 7 years ago | |||
| gretchengehrke | "Thank you so much, @Ag8n! This is exactly what I was hoping to see. I live near Duke University and can see if they have the books there too. Does ..." | Read more » | almost 7 years ago | |||
| Ag8n | "See below These are photos taken from" the particle atlas", second edition, volume II, by mccrone. " | Read more » | almost 7 years ago | |||
| Ag8n | "I checked the images. There are pictures of quartz and several for cristobalite. Didn't see one for tridymite. " | Read more » | almost 7 years ago | |||
| Ag8n | "I'm no expert on microscopy. Did mess with it a little. The difference I notice is a lot of the work is done with crossed polars- messing with th..." | Read more » | almost 7 years ago | |||
| gretchengehrke | "We've been trying to use DIY microscopes to distinguish between crystalline and non-crystalline particulate matter. Of course we wouldn't be able t..." | Read more » | almost 7 years ago | |||
| warren | "Wow, would you be able to share an image of "respirable silica"? I'm thinking of how to unpack answers to these questions: https://publiclab.org/q..." | Read more » | almost 7 years ago | |||
| Ag8n | "I do have a copy of edition two, which is four volumes. Volume 1 goes over microscopes, volume 2 gives pictures of the different materials, and vo..." | Read more » | almost 7 years ago | |||
| warren | "This is fantastic - do you have a copy or could we find a copy and share pictures especially of silica particles? " | Read more » | almost 7 years ago |