Coursework.Info - Inspiration in an Instant

On the left is an image preview of every page of this document, and below are the first 150 words with formatting removed:

Electron Microscopy What is an Electron Microscopy? Microscopes are used to look at objects that cannot be seen by the naked eye. There are two types of microscopes: light microscopes which use light to see the image these microscopes use lenses and light to project the image in to the eye, and the second are electronic microscopes these use electrons and magnets to project an image on to a fluorescent screen since electrons can not be seen by our eyes. How does it work? 1. Electrons are fired from an electron gun. 2. Electrons then travel through a vacuum. 3. They go through the specimen and objective lens. 4. The electrons then hit a flourescent screen and make light. 5. The light makes a picture (electron micrograph), which is visible to the human eye. Electrons can be affected by such as air molecules that's why they have to travel through a vacuum and that's why a fluorescent...

To see the full version of this document, and 145,348 others