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In a newspaper ad, a scientist asks for volunteers to test a new theory on the speed of light by using a machine he invented. How would you know that this is an unreliable newspaper ad? The speed of light is an untested theory. The speed of light is a law, not a theory. Machines cannot measure the speed of light. The scientist is proposing an untested hypothesis.
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The speed of light is a law.. it's been measured. in fact. 299 792 458 m / s
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