Some of you probably know this already, but there’s actually more than one kind of electron microscope. In electronics work, the scanning electron microscope (SEM) is the most common.

[Yoshinok] recently posted an Instructable on doing a $10 smartphone-to-microscope conversion. The hack isn’t so much a conversion as just a handy jig, but it’s still interesting. The basic ...

With the invention of the microscope at the beginning of the seventeenth ... concept of organisms as "republics of living elementary units" 7. As well as being the fundamental unit of life ...