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How fast does light travel?
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Light travels extremely fast. In air or a vacuum, the speed of light is 186,400 metres per second. (300,000 kilometres per second). At this speed, it takes just over 8 minutes for light from the Sun to reach the Earth. | | Light waves |
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Previous:
Back
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Book:
1001
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Section:
Science and Technology
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Chapter:
Heat and Light
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