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| Math Central | Quandaries & Queries |
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Question from julie: if i was travelling in a spacecraft at the speed of light and i turned on my headlight would i see the beam ? |
As a spaceship cannot travel at the speed of light (nothing with mass can) there isn't really an answer to this.
But if you were in a spaceship traveling at, say, 99.99% of the speed of light, your headlight (and lights in the cabin) would act just like lights of a stopped spaceship. This is because very high speeds don't add the way lower speeds do. This is surprising but has been experimentally tested in many ways.
Good Hunting!
RD
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