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Terms in this set (40)
Electromagnetic waves are?
Which of these electromagnetic waves has the shortest wavelength?
Compared to the velocity of radio waves, the velocity of visible light waves is?
Which of the following is fundamentally different from the others?
The main difference between a radio wave and a sound wait is its?
When Roemer took measurement of one of Jupiter's moon moving behind Jupiter, he found his predicted time was off. Compared to when the earth was close to Io, the predicted times when the earth was farthest from Io were?
Heat lamps give off mostly?
Glass is transparent to visible light, but not to?
transmit UV light
Do you shadow produced by an object till close to a piece of paper in sunlight will be?
Light waves are?
A photographer wishes to use a safety light in a dark room that will emit low-energy photons. The best color of this light is?
How far is a light-second?
Light reflected from the lake surface is polarized?
What is the wavelength of an electromagnetic wave that has a 1 Hz frequency?
more than 1 m
After randomly polarized light passes through a polarizer, it is?
If two Polaroid filters are held with their polarization axes at right angles to each other, the amount of light transmitted compared to when their axes are parallel is?
According to Einstein, like consist of massless bundles of electromagnetic energy called photons.
Energy emitted by vibrating electric charges is carried by electromagnetic waves.
Materials that allow light to pass through them in straight lines are called opaque materials.
A scene beam of light is called an x-ray.
Total shadow is called an umbra.
Polarization occurs when waves vibrate in a single direction.
Light sometimes acts as a wave and sometimes as a particle.
Glass transmits ultraviolet and visible light waves but not in infrared waves.
The distance light travels in one year is called a light year.
Electromagnetic heat waves are called ultraviolet waves.
Infrared waves are responsible for sunburn.
A single particle or packet of light
3 x 10^8 m/sec
The speed of light and the fastes speed in the universe
Uses dispersion to separate white light into its colors
A wave that can travel through a vacuum
All light: visible and invisible
Also known as an electron orbit. To move from low to high requires energy
EM waves that have very low energy and long wavelength
Electromagnetic waves we feel as heat
EM waves with more energy then visible light and can cause sunburns
EM waves that can pass through skin and have shorter wavelengths
Gamma raysdanger is EM waves that have very high energy and come from nuclear reactions
Long wavelength; used in cell phones
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