This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: 1. Sun emits most strongly at these wavelengths 2. Earth's atmosphere blocks many other wavelengths 3. Human eye efficiently detects available light. 4. Is light really a wave ? • sometimes light acts like a particle - "photon" • sometimes light acts like a wave • it is really both - or neither - we just don't have the right words to describe it completely Energy carried by light depends on wavelength (color, frequency): • short wavelength => more energy • long wavelength => less energy o blue light carries more energy than red light x-rays carry more energy than radio waves Mathematically, we can express this as: E = hc / λ where E is the energy, λ is the wavelength, and h anc c are constant numbers....
View Full Document
This note was uploaded on 03/09/2012 for the course AST 1002 taught by Professor Emilyhoward during the Spring '10 term at Broward College.
- Spring '10