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In atoms, when they are affected by energy, the electrons will get excited and move up to a higher energy state. When they relaxe and move back down, the extra energy gets shot out as an electro magnetic wave (photon, or light)

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15y ago
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8y ago

Electric charges in oscillating motion do.
any movement of charged particles

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11y ago

Lots of things. Care to be more specific?

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11y ago

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12y ago

oscillating electrical charges

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Q: What provides electromagnetic waves?
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