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I don't think the video mentioned anything about an electron microscope. Jon Larsen is basically an amateur scientist that figured out what micrometeorites wou
by fouc 8y ago
I don't think the video mentioned anything about an electron microscope.
Jon Larsen is basically an amateur scientist that figured out what micrometeorites would look like by a process of elimination. Clearly a regular microscope is sufficient for this.
The nice images from Jan Kihle are due to a camera/microscope system that takes a snap shot at different focuses to make a composite picture. It wouldn't be an electron microscope.
This is clearly within the range of amateurs if you have a microscope & the book and just get good at eliminating unlikely samples.
- rm999 8y agoAh whoops you're right! At 8:39 I saw a mention of a scanning electron microscope and thought they were saying they used it in the analysis. They are actually saying one would be needed for that particular sample.
- nkurz 8y agoI don't think the video mentioned anything about an electron microscope. It's not emphasized, and not present at all in the audio, but there is "mention" within the video. At 8:40 in the video (https://youtu.be/9q3uNcJh4pc?t=516 https://youtu.be/9q3uNcJh4pc?t=516), when showing the response from Larsen, the sentence after the highlighting reads "a scanning electron microscope (SEM) examination ... would be necessary". So you are right that it wasn't done, but it apparently would have been the next step for a confirmation.
- TomK32 8y agoI was about to write "Let's leave the composite picture as an excercise for the image processing class" but there's already software for this [Focus stacking](https://en.wikipedia.org/wiki/Focus_stacking https://en.wikipedia.org/wiki/Focus_stacking) and even some python code https://github.com/sjawhar/focus-stacking/ https://github.com/sjawhar/focus-stacking/