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So for a 10 pm gamma and a FCC metal like gold, silver, copper with a representative lattice dimension of 250 pm,
-----Original Message-----[Bill Nettles] Looking at #2, the order of magnitude of the wavelength of a microwave is 1 mm. For a gamma ray, it's 1 pm. Compare these to the intermolecular or interatomic spacing of the material. What does this tell you about the comparative chance of interaction?
From: phys-l-bounces@carnot.physics.buffalo.edu [mailto:phys-l-
bounces@carnot.physics.buffalo.edu] On Behalf Of Zeke Kossover
Sent: Monday, September 19, 2011 3:12 PM
To: phys-l@carnot.physics.buffalo.edu
Subject: [Phys-l] Amplitude in E&M
Two questions
1. Would it be reasonable to say (that is, pedagogically a good idea)
that an electromagnetic wave has an amplitude?
2. Why are microwaves reflected by a piece of metal and not gamma rays?
Don't both have a skin effect?
Thank you.