There are two types of microscopes available: simple and compound microscopes. A simple microscope is equipped with one lens but a compound microscope has both an eyepiece and an objective lens.

Over the years, Prakash experimented with building microscopes, even stealing lenses from his brothers' eyeglasses ... bring ...

Researchers at Cornell University have built the world’s smallest walking robot, at just two to five microns across: so small ...

Huygenian Huygens eyepieces are constructed of two plano-convex lenses with both plane sides facing the eye. Periplan Periplan eyepieces are constructed of one achromatic doublet and two plano-convex ...

A $20 microscope lens allows for some amazing shots. There are two designs that fit different cropped-image and full-frame cameras. As you might expect, the depth of field is razor-thin ...

Over the years, Prakash experimented with building microscopes, even stealing lenses from his brothers ... Over the next two years, the colleagues built 50,000 Foldscopes — they cost less ...