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2.7: Telescopes

Difficulty Level: At Grade Created by: CK-12
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electromagnetic radiation Energy transmitted through space as a wave.
electromagnetic spectrum The full range of electromagnetic radiation.
frequency The number of wavelengths that pass a given point every second.
microwave The shortest wavelength radio waves.
radio telescope A radio antenna that collects radio waves or microwaves.
reflecting telescope Telescopes that use mirrors to collect and focus light.
refracting telescope Telescopes that use convex lenses to collect and focus light.
space telescope Telescopes in orbit above Earth's atmosphere.
wavelength Horizontal distance from wave crest to wave crest, or wave trough to wave trough.

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Difficulty Level:
At Grade
Date Created:
Feb 24, 2012
Last Modified:
Aug 07, 2016

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