Why was a very thin metallic film used in G.P.Thomson's experiment on electron diffraction?

Asked by  | 21st Mar, 2009, 11:00: AM

Expert Answer:

The electron beam is diffracted.

If the metallic film is not thin the electrons will not form a pattern on the screen as they will not be able to pass through.

The diffraction pattern is not formed  by reflection from the metallic film.

Answered by  | 4th Apr, 2009, 03:34: PM

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