is electromagnetic in character. It sits at the high-energy (~103-105
keV), short-wavelength (~10-12m), end of the electromagnetic spectrum, shown
opposite. The phenomena responsible for different types of electromagnetic
are also detailed.
wavelength l, and frequency n,
are related for electromagnetic waves by:
- l x
n = c
where h = Planck's constant
c = velocity of light
There is some overlap between higher energy x-rays and lower energy
gammas; different names are used merely to indicate their origin.