Week 7 Assignment Reflection
Week 7, Unit 7. Assignment 1. Reflection, Refraction and Optics
Refraction is the bending of waves as they pass from one medium to another, due to a change in their speed. The phenomenon is most commonly associated with light, but can also apply to sound, or even water, waves. It happens when a series of waves travels toward the new medium at an angle, so that one side experiences a change in speed before the other, causing it to turn toward the slower side in the same way that a moving vehicle will tend to turn if one side is slowed more than the other. Refraction can cause objects to appear displaced, and may amplify distant sounds. It has many uses in the context of light, such as lenses and prisms. The sun appears higher in the sky than its true position, twinkling of stars, Water- the photons slow down when they hit water and mirrors...depending on the top layer of the mirror it changes the way light reflects from it! For example aluminum foil reflects your image but if you crush the foil, then flatten it- your image is scattered by the light! Refraction, or bending of light rays, occurs when light travels from one transparent substance to another. Placing a large bottle of water in front of newsprint makes the letters appear wider and larger, because it bends the light inward, making it appear to the eye that the light rays are coming from much wider print. Convex lenses are used in movie and slide projectors, and in eyeglasses for far-sighted people. A concave lens “caves in’ in the middle, so it is thin in the middle and thick on the outer edges. Light rays passing through concave lenses spread out, so objects look smaller through concave lenses. Concave lenses are used in cameras and eyeglasses for near-sighted people. The magnifying power of a lens is related to its shape. There are many useful devices that form images by refraction, such as eyeglasses, cameras, binoculars, microscopes, and telescopes. All of these devices use curved glass or
Refraction is the bending of waves as they pass from one medium to another, due to a change in their speed. The phenomenon is most commonly associated with light, but can also apply to sound, or even water, waves. It happens when a series of waves travels toward the new medium at an angle, so that one side experiences a change in speed before the other, causing it to turn toward the slower side in the same way that a moving vehicle will tend to turn if one side is slowed more than the other. Refraction can cause objects to appear displaced, and may amplify distant sounds. It has many uses in the context of light, such as lenses and prisms. The sun appears higher in the sky than its true position, twinkling of stars, Water- the photons slow down when they hit water and mirrors...depending on the top layer of the mirror it changes the way light reflects from it! For example aluminum foil reflects your image but if you crush the foil, then flatten it- your image is scattered by the light! Refraction, or bending of light rays, occurs when light travels from one transparent substance to another. Placing a large bottle of water in front of newsprint makes the letters appear wider and larger, because it bends the light inward, making it appear to the eye that the light rays are coming from much wider print. Convex lenses are used in movie and slide projectors, and in eyeglasses for far-sighted people. A concave lens “caves in’ in the middle, so it is thin in the middle and thick on the outer edges. Light rays passing through concave lenses spread out, so objects look smaller through concave lenses. Concave lenses are used in cameras and eyeglasses for near-sighted people. The magnifying power of a lens is related to its shape. There are many useful devices that form images by refraction, such as eyeglasses, cameras, binoculars, microscopes, and telescopes. All of these devices use curved glass or