CBSE Class 11-science Answered
While the collision of a photon with an electron,,for locating the position of the electron,does the photon enter the electron microscope or the electron deflects and enters into the electron microscope??plz explain...
Asked by isha007 | 16 Aug, 2010, 12:00: AM
Expert Answer
In an electron microscope:
The light source is a beam of very fast moving electrons.
The specimen usually has to be specially prepared and held inside a vacuum chamber from which the air has been pumped out because electrons do not travel very far in air.
The lenses are replaced by a series of coil-shaped electromagnets through which the electron beam travels. In an electron microscope, the coils bend the electron beams the same way.
The image is formed as a photograph (called an electron micrograph) or as an image on a TV screen.
Answered by | 17 Aug, 2010, 09:31: AM
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