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chapter 24
The physical nature of light
14
Physics
9th Grade
05/07/2008

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Term
Electromagnetic wave
Definition
The wave in the magnetic field also keeps traveling outward at the speed of light
Term
electromagnetic spectrum
Definition
The entire range of electromagnetic waves, including all possible frequencies
Term
The speed of light
Definition
c=f____(wavelength)
Term
Radio waves
Definition
lowest frequency waves
Term
microwaves
Definition
range in length from approximately 30cm to 1mm
Term
infrared light
Definition
includes wavelenghts from 1 millimeter to about 700 nanometers
Term
Visible light
Definition
has wavelengths between 700-400 nanometers and includes all the colors of light we see when white light is split by a prism
Term
ultraviolet light
Definition
has  a range of wavelengths from 10 to 400 nanometers
Term
x rays
Definition
are high freaquency waves that are used extensively in medical and manufacturing applications
Term
Gamma rays
Definition
have wavelenghts of less than about ten-trillionths of a meter
Term
diffraction grating
Definition
an interference patttern similar to the pattern for the double slit
Term
diffraction patter
Definition
the series of bright spots on either side of the central bright spot
Term
polarizer
Definition
is a material that allows light of only one polarization to pass through
Term
photoluminescence
Definition
the process of realasing stored light energy
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