Outline On Refraction Paper
Chapter 14 Outline
I. Refraction of Light
A. Refraction is the bending of light at the boundary of two media.
1. It is caused by differences in the way light travels in the two media
a) Light changes speed unequally.
(1) One side of the light becomes slower/faster
2. If light is perpendicular to the new medium, light will not refract
a) If the media have the same index of refraction, light will not refract
B. Index of Refraction
1. How well light travels through a medium is measured by its index of refraction
a) Larger the index the slower light travels
2. N = C/v where N is the index of refraction C is the speed of light in a vacuum and V is the speed of light in the medium.
a) N has no label and speeds are in m/s
C. Refraction is what causes object to …show more content…
RAINBOWS
1. Sunlight is refracted off the front and back of the water droplet and produces a complete spectrum.
2. Depending on the angle of the sun, droplet, and observer particles seem to only have one color.
a) That’s why we see the different bands of color in the sky. Red has 42o angle with sun’s rays while blue is at a 40o angle
IV. Optical Phenomena
A. Total Internal Reflection
1. When light tries to enter a less optically dense material, the light might refract 90o or more.
a) This will bend the light between the two media or back into the original material.
2. The refraction of light of 90o (between the two media) is caused by a special angle of incidence –the critical angle
3. The bending of light back into the original medium (refraction > 90o) is known as total internal refraction
B. Conditions for Total Internal Reflection
1. Light must move from a higher index of refraction to a lower index of refraction
2. Light must bend away
3. Light must be greater than the critical angle
C. Dispersion of Light
1. Light travels at 3.00 x 108 m/s only through a vacuum of space but in other media, light moves slower
D. Waves of different wavelengths travel at different
I. Refraction of Light
A. Refraction is the bending of light at the boundary of two media.
1. It is caused by differences in the way light travels in the two media
a) Light changes speed unequally.
(1) One side of the light becomes slower/faster
2. If light is perpendicular to the new medium, light will not refract
a) If the media have the same index of refraction, light will not refract
B. Index of Refraction
1. How well light travels through a medium is measured by its index of refraction
a) Larger the index the slower light travels
2. N = C/v where N is the index of refraction C is the speed of light in a vacuum and V is the speed of light in the medium.
a) N has no label and speeds are in m/s
C. Refraction is what causes object to …show more content…
RAINBOWS
1. Sunlight is refracted off the front and back of the water droplet and produces a complete spectrum.
2. Depending on the angle of the sun, droplet, and observer particles seem to only have one color.
a) That’s why we see the different bands of color in the sky. Red has 42o angle with sun’s rays while blue is at a 40o angle
IV. Optical Phenomena
A. Total Internal Reflection
1. When light tries to enter a less optically dense material, the light might refract 90o or more.
a) This will bend the light between the two media or back into the original material.
2. The refraction of light of 90o (between the two media) is caused by a special angle of incidence –the critical angle
3. The bending of light back into the original medium (refraction > 90o) is known as total internal refraction
B. Conditions for Total Internal Reflection
1. Light must move from a higher index of refraction to a lower index of refraction
2. Light must bend away
3. Light must be greater than the critical angle
C. Dispersion of Light
1. Light travels at 3.00 x 108 m/s only through a vacuum of space but in other media, light moves slower
D. Waves of different wavelengths travel at different