Thanks Laurie, Rick, Narayan, and Carlos.
Quote:
Originally Posted by ourkind
A timelapse of those crystals forming would be cool to see! Nice shot thanks for sharing.
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Until I figure out how to control the individual frame exposures in a timelapse, the resultant AVI file is nothing more than a film of pitch blackness.
The theory behind behind dark field microscopy is found
here.
A much easier and cost efficient way of producing a dark field on a stereo microscope is to have an external light source located in the plane of the glass slide and illuminating the side of the slide. Due to the oblique angle of the light, the light rays are reflected off the glass away from the detector.
The light that reaches the detector is scattered light which results in the dark field.
Regards
Steven