Newton vs Huygens

2. In refraction, Newton thought that the ___________ component of the velocity increased.
4. Young's double slit experiment showed alternating bright and dark f_________ .
6. In Huygens' theory, the tangent line joining each circular wavelet is called the _______________ .
7. Newton proposed that reflection of light was similar to an __________ collision of a ball against a wall.
12. This is the process where two waves add up or subtract from each other.
13. Huygens' theory was rejected because there was no ________ for the lower speed of light in glass and water until the year 1850.
14. Huygens was not believed for a long time because Newton was far more _________ .

1. Huygens correctly predicted that the the speed of light ________ in water.
3. Huygens proposed the ______ theory of light
5. Bright fringes are formed by constructive interference of waves in phase with _____ __________ of n wavelengths.
8. Newton's theory predicted only this number of bright fringes would form in Young's experiment.
9. Dark fringes are formed by ___________ interence of waves 180 degrees out of phase with path difference of n+0.5 wavelengths.
10. Newton's theory of light was called the ____________ theory
11. Newton's theory cannot predict dark fringes because particles cannot _____ each other.