electron microscope

noun

1. a microscope of extremely high power that uses beams of electrons focused by magnetic lenses instead of rays of light, the magnified image being formed on a fluorescent screen or recorded on a photographic plate: its magnification is substantially greater than that of any optical microscope.

electron microscope

noun

1. a powerful type of microscope that uses electrons, rather than light, and electron lenses to produce a magnified image

electron microscope

1. A microscope that produces images of extremely small objects by using beams of electrons rather than visible light. Since electrons have a much shorter wavelength than light, the use of electron beams rather than light beams can resolve much finer structural details in the sample. Electrons are beamed at the sample and focused by magnets; a detector then converts the refracted or reflected beams into a black and white image.
2. See also scanning electron microscope

electron microscope

1. A device that uses electrons instead of light to form images of very small objects, such as individual parts of small living things.

Word History and Origins

Origin of electron microscope¹

First recorded in 1930–35

Example Sentences

The sample was then sliced into more than 5,000 wafer-thin pieces and imaged with powerful electron microscopes.

From Science News

After one layer is vaporized, an electron microscope images the newly exposed layer.

From Singularity Hub 

In the lab, the sampleslooked identical, and their internal structures were indistinguishable in scanning electron microscope images.

From Science News

Researchers can now sequence novel viruses and study their genomes, but even so the electron microscope continues to offer a unique “open” view of such pathogens.

From Nautilus

Using a scanning electron microscope, Vicenzi and colleagues have examined dozens of materials, including coffee filters, pillowcases, surgical masks and N95 masks.

From Science News

It took an electron microscope to do it, but he found a virus in the blue patches which matched the type discovered on Tralee.

From Project Gutenberg

I'll arrange for one of the teaching fellows to show you how to prepare metallic samples and operate the electron microscope.

From Project Gutenberg

The electron microscope told them that, now that they had the substance isolated and could examine it.

From Project Gutenberg

The screen was a cubical frame in which an apparently solid image was built up of an object under an electron microscope.

From Project Gutenberg

He found his father in the laboratory working with the electron microscope.

From Project Gutenberg