Naked Science Forum

Non Life Sciences => Physics, Astronomy & Cosmology => Topic started by: DoctorBeaver on 15/11/2008 20:34:23

Title: what would we see of an object travelling towards us at near lighhtspeed?
Post by: DoctorBeaver 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?

Title: what would we see of an object travelling towards us at near lighhtspeed?
Post by: lyner 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.

Title: what would we see of an object travelling towards us at near lighhtspeed?
Post by: DoctorBeaver on 16/11/2008 00:21:25

Good point. I feel silly now  [:I]

Title: what would we see of an object travelling towards us at near lighhtspeed?
Post by: RD 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