Electromagnetic waves Flashcards

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1
Q

Electromagnetic wave

A

An oscillation in an electromagnetic field, which is an electric field and a magnetic field oscillating at right angles to each other.

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2
Q

Vacuum

A

A region containing no matter.

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3
Q

Intensity

A

The power transferred by a wave over an area.

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4
Q

Communications satellite

A

An object that sits in an orbit above earth, relaying communication signals.

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