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what would we see of an object travelling towards us at near lighhtspeed?

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DoctorBeaver (OP)

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what would we see of an object travelling towards us at near lighhtspeed?

« on: 15/11/2008 20:34:23 »

Light from such an object would be greatly blue-shifted. Would we still be able to see it?

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lyner

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what would we see of an object travelling towards us at near lighhtspeed?

« Reply #1 on: 15/11/2008 21:49:38 »

The infra red (or microwave or RF etc.) would be shifted into the visible part of the spectrum.

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DoctorBeaver (OP)

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A stitch in time would have confused Einstein.

what would we see of an object travelling towards us at near lighhtspeed?

« Reply #2 on: 16/11/2008 00:21:25 »

Good point. I feel silly now [:I]

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RD

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what would we see of an object travelling towards us at near lighhtspeed?

« Reply #3 on: 16/11/2008 01:47:14 »

If it was moving towards you it would appear elongated and blue-shifted, (if moving away foreshortened and red-shifted) ...
http://www.spacetimetravel.org/bewegung/bewegung3.html

Also there would be "An unexpected view of the back side" ... http://www.spacetimetravel.org/bewegung/bewegung5.html

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