Which type of waves can propagate through a vacuum?

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Multiple Choice

Which type of waves can propagate through a vacuum?

Explanation:
Waves that can travel in a vacuum must carry energy without needing a medium to push against. Electromagnetic waves do this: they are oscillating electric and magnetic fields that can propagate through empty space, as described by Maxwell’s equations. This is why light from the Sun and radio signals from satellites reach us through the vacuum of space. Sound, water, and other mechanical waves, on the other hand, rely on particles to transfer energy from one place to another, so they cannot move where there are no particles to interact with.

Waves that can travel in a vacuum must carry energy without needing a medium to push against. Electromagnetic waves do this: they are oscillating electric and magnetic fields that can propagate through empty space, as described by Maxwell’s equations. This is why light from the Sun and radio signals from satellites reach us through the vacuum of space. Sound, water, and other mechanical waves, on the other hand, rely on particles to transfer energy from one place to another, so they cannot move where there are no particles to interact with.

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