Chapter 6 - Light and Telescopes:
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15 Terms
Light Waves
Electromagnetic radiation that travels in waves
Wavelength
Distance between two peaks of a wave
Frequency
Number of wave cycles per second
Light as Particles
Photons, packets of energy that make up light
Atmospheric Windows
Wavelength ranges where Earth's atmosphere is transparent
Refracting Telescope
Uses lenses to bend light
Reflecting Telescope
Uses mirrors to reflect and focus light
Chromatic Aberration
Dispersion of light into colors
Light Gathering Power
Ability to collect light
Resolving Power
Ability to distinguish fine details
Seeing
Atmospheric conditions affecting telescope performance
Adaptive Optics
Technology to reduce effects of atmospheric distortion
Resolution
Ability to distinguish two separate points
Interferometry
Combining signals from multiple telescopes
Radio Interferometer
Array of radio telescopes working together
