Electromagnetic Waves
What are Electromagnetic waves?
a transverse wave consisting of changing electric and changing magnetic fields.
What does the Electric spectrum include?
Radio waves, infrared waves, visible light, ultraviolet rays, x-rays, and gamma rays.
Materials can be?
Transparent, Translucent, or opaque.
White light can be passed through a what?
a prism
Electromagnetic waves vary in what?
Wavelength and Frequency
What are Electromagnetic waves used in?
Communications, medicine, and industry.
When lights strikes a new medium it can be what?
Reflected, absorbed, or transmitted.
What are the primary colors of light?
Red, green, and blue.
Light spread out as it behaves it away from its what?
Source.
Define Thermogarms.
a color-coded picture using variations in infrared radiation to show variations in temperature.
Define Opaque.
a description of a material that either absorbs or reflected all of the light that strikes it so nothing can be seen through it.
The primary colors of pigments are?
cyan, yellow, and magenta
Electromagnetic waves are produced when?
a electric charge vibrates or accelerates.
Define frequency modulation.
a method of transmitting a radio signal in which the frequency of the carrier wave varies while amplitude remains the same.
Define Mirage.
A false or distorted image
Define secondary colors.
a new color that results when any two of the primary colors are combined
Define Photons.
a packet of electromagnetic energy
Define Amplitude
a method of transmitting a radio signal in which the amplitude of the carrier waves varies while frequency remains the same.
Define Image.
a copy of an object formed by reflected or refracted rays of light.
Define Dispersion.
process of dissolving by breaking into smaller pieces, the process in which white lights separates into colors.