05_01_31 - Georg.Hoffstaetter@Cornell.edu 15 Further...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Georg.Hoffstaetter@Cornell.edu 15 Further evidence for photons ) ( max - = h K 01/31/2005 The photoelectric effect: 1) The maximum electron energy depends only on Q and increases linearly with Q : E max = h Q- W (Millikan 1916) 2) There is a minimum Q independent of intensity. It is the Work function W divided by h . 3) The first emission happens faster than a wave would deposit energy (Lawrence and Beams 1928) 4) Different metals lead to the same value for h e e e Q Q Q ! Georg.Hoffstaetter@Cornell.edu 16 Further evidence for photons 01/31/2005 The Compton effect: Scattering of light with free electrons follows the formulas of classical scattering of free particles when one assumes an energy E=h Q and momentum p=E/c=h/ O for the photons. (Compton 1919-1923) Bremsstrahlung The maximum emitted frequency depends only on the electron energy, not on the e-beam intensity....
View Full Document

This note was uploaded on 09/28/2008 for the course PHYS 316 taught by Professor Hoffstaetter during the Spring '05 term at Cornell University (Engineering School).

Page1 / 5

05_01_31 - Georg.Hoffstaetter@Cornell.edu 15 Further...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online