Physicists have created the world’s fastest microscope, and it’s so quick that it can spot electrons in motion. The new device, a newer version of a transmission electron microscope ...

SEM stands for scanning electron microscope. The SEM is a microscope that uses electrons instead of light to form an image. Since their development in the early 1950's, scanning electron microscopes ...

In electronics work, the scanning electron microscope (SEM) is the most common. You hit something with electrons and watch for secondary electron emissions. However, biologists more often use a ...