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nature of light

Terms

undefined, object
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What type of wave is light?
electromagnetic
electromagnetic waves are
transverse waves
radiation
the emission of energy in the form of EM waves
List wave types from high to low energy
gamma, z-ray, ultra-violet, visible light, infra-red, microwaves, tv, radio
What type of frequency and wavelength would be found on a high energy wave?
high frequency, short wavelength
modulation
changing amplitude or frequency
FM
frequency modulation
AM
amplitude modulation
radar
detect speed and location of objects
What are the colors of visible light?
red, orange, yellow, green, blue, indigo, violet. (roy g. biv)
what is white light?
all colors of light blended together
Law of Reflection
the angle of incidence is equal to the angle of reflection
regular reflection
beams reflect off all points of the surface at the same angle
diffuse reflection
beams hit the surface and reflect at many angles
absorption
the transfer of energy carried by light waves to particles of matter
scattering
the release of light energy by particles of matter that have absorbed energy
transmission
the passing of light through matter
translucent
matter transmits and also scatters light as it passes through
opaque
matter that does not transmit any light
primary colors
red, blue, green
secondary colors
made from 2 primary colors
pigment
materials that absorb some wavelengths of light and reflects others
mixing pigments
color subtraction
combining colors of light
color addition
primary pigments
yellow, cyan, magenta
what happens to light as it chages medium
refraction
how do raindrops act as prisms?
they reflect and refract light inot colors
lenses are used to ________ light
refract
a packet of light energy
photon
What color absorbs all wavelengths of light?
black

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