Understanding Light Reflection and Refraction
Explore the fascinating world of light and its behavior with reflection and refraction. Learn about how light travels, bounces off objects, and bends in different mediums. Discover the properties of light, the phenomenon of refraction, and the laws governing reflection. Delve into topics such as regular versus diffuse reflection, mirrors, and the captivating demonstrations that showcase these principles in action.
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Presentation Transcript
Light & Matter KATE ALBARRACIN Reflection & Reflection & Light
Reflection Refraction Light bounces off of objects Light bends in objects
Sorting Reflection Refraction Mirror Shiny Screen Key Eyeglasses Prism Rainbow straight Magnifying glass Pond Water
Light travels VERY FAST about 300,000 kilometers per second or 186,000 miles per second. At this speed light could travel the equivalent of 8 times around the world in one second!
Properties of Light Light travels in _______ lines: Straight Laser
Light hitting at an angle is bent Light hitting straight on is not bent
Refraction The amount that light bends when it enters a new medium is called the index of refraction Refraction is when light speeds up or slows down due to travelling in a different medium Causes the ruler to look bent at the surface The mediums in this example are water and air
Regular vs. Diffuse Reflection Smooth, shiny surfaces have a regular reflection: Rough, dull surfaces have a diffuse reflection. Diffuse reflection is when light is scattered in different directions
Part 2 - Reflection and Mirrors Reflection from a mirror: Normal Reflected ray Incident ray Angle of reflection Angle of incidence Mirror
The Law of Reflection Angle of incidence = Angle of reflection In other words, light gets reflected from a surface at ____ _____ angle it hits it. The same !!!
We see things because they reflect light into our eyes! This is literally the only way we get to see things! ALL objects we see either create light or reflect light!! Homework
