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11 Cards in this Set
- Front
- Back
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Andromeda Galaxy
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2.5 million light years away
closest galaxy to our own impossible to get to |
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radiation
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energy is transmitted through space with no physical contact (any space)
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electromagnetic
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has an electrical type component and magnetic type component
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period
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number of seconds needed for wace to repeat it's self
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wavelength
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number of meters for the wave to repeat in a given time
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amplitude
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height of the wave relative to normal
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frequency
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number of wave crests passing a given point per unit time (per sec.)
1 f = ----------- period |
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Hertz
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the frequency of waves you're picking up
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speed of light
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3 * 10^5 km
C= ---- second |
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electromagnetic wave
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magnetic component is perpendicular to electrical component
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infared radiation
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where heat comes from
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