•Short wavelength Þ
High energy photons
•Long
wavelength Þ Low energy
photons
•
•Intensity µ total energy (per area per second)
µ
(# of photons per area per second)
´ (energy per photon)
–
•Example
with falling rain:
–Amount
of rain µ (# of raindrops) ´ (volume per drop)
–