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"But in this case, the researchers used a custom-made microscope that shines a light onto the sample and measures the intensity of the light that bounces back."
by tsbinz 7y ago
"But in this case, the researchers used a custom-made microscope that shines a light onto the sample and measures the intensity of the light that bounces back."
That's how eyes work as well. Well, they need a light source to help, but otherwise ...
- mattkrause 7y agoNot always how a microscope works though. This article has a nice little comparison of a few different methods, not all of which measure (only) reflection https://en.wikipedia.org/wiki/Dark-field_microscopy https://en.wikipedia.org/wiki/Dark-field_microscopy There’s also a whole world of microscopy where emissions from the sample itself are measured, often because parts of it have been tagged with fluorescent probes.