Waves ch. 1 Optics part 2

1. Explain diffraction and interference as related to waves: When an object is placed in the path of waves, they go around it. That is diffraction.  When two sets of waves overlap and cross, some waves cancel each other out, and some add to each others' speed. That is Interference.
2. What did Young prove that seemed to settle the particle/wave question of how light moves: Young proved that light does diffract and does produce interference, like waves.
3. Light intensity from any source varies rapidly as the distance form the source increases. 
4. What was Albert Michelson's contribution to the field of Optics: Albert Michelson devoted most of his life to accurately finding the speed of light.
5. What is the speed of light and what can travel faster that that: The speed of light is 186,281.7 miles per second! Nothing can travel faster than that. 

Bell