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Quinn science O3

The Nature of Light

electromagnetic wave transmit energy, can travel through space or matter, consists of changing electric and magnetic fields
radiation the transfer of energy through matter or space as electromagnetic waves, such as visible light and infrared waves
electromagnetic spectrum the entire range of electromagnetic waves
reflection the bouncing back of a wave after it stirkes a barrier, mirror
law of reflection states that the angle of incidence is equal to the angle of reflection
absorption the transfer of energy carried by a light wave to particles of matter
scattering the release of light energy by particles of matter that have absorbed light
refraction the bending of a wave as it passes at an angle from one medium to another
diffraction the bending of a wave around a barrier or through an opening
interference interaction that occurs when two or more waves overlap
transmission the passing of light through matter
transparent light can easily be transmitted through
translucent light can be transmitted but is also scattered
opaque light can NOT be transmitted through
pigment a material that gives a substance its color by absorbing some colors of light and reflecting others
light produced by electrons aborbing and releasing energy when jumping to new positions and back, releases photons
speed of light 300,000,000 m/s
radio waves lowest frequency, longest wavelength
AM amplitude modulation, form of radio wave transmission, travels farther than FM, less information, picture
FM frequency modulation, form of radio wave transmission, does not travel as far as AM, more information, sound
microwaves shorter wavelength and higher frequency than radio waves, radar is a type
radar radio detection and ranging, used to detect speed and location of objects
infrared more energy than microwaves
visible light ROYGBIV, humans can see
ultraviolet helps produce vitamin D, can damage skin, causes wrinkles, cancer, and sunburn
x rays can penetrate skin to see inside the body, can damage healthy cells
gamma rays shortest wavelength, highest frequency, can treat cancer, can damage healthy cells
light interacts with matter reflected, absorbed, or transmitted
primary colors of light red, blue and green
primary colors of pigment yellow, cyan, and magenta
speed of light distance/time
Created by: cquinnd15.org