Quote:
Originally Posted by peacegirl
No, that's not what they're saying. They're saying that light has to reach Earth to strike the eyes.
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Which is of course perfectly true. Light cannot strike the eyes on Earth before it has had time to get to the Earth.
Quote:
Originally Posted by peacegirl
Even in this hypothetical example, if it takes a nanosecond for the Sun to be turned on and the light travel to where it would be at our eyes, this just means that in that nanosecond we wouldn't be able to see the Sun because there was not enough light present.
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But it
doesn't take a nanosecond. It takes light
8min to get from the sun to our eyes on Earth. If light could get here from the Sun in a nanosecond, then that light would have traveled faster than the speed of light.
Quote:
Originally Posted by peacegirl
But if you think about this model in reverse (where we see the object) we're talking about the Sun emitting light comparable to the space of a baseball field.
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The real distance of 93 million miles is definitely NOT comparable to the space of a baseball field. And even with a baseball field, it still takes light time to get from one end to the other.
Quote:
Originally Posted by peacegirl
The actual distance between the object and the eye is not what determines sight in this account; only brightness and size.
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Brightness and size cannot explain how your needed photons can get from the Sun to the film or retina on Earth in zero time.
Quote:
Originally Posted by peacegirl
Light still has to be at our eyes in this account. It's not magic.
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It will remain magic until you can explain where the light at the eyes came from and how it got there.