Come ask questions and give answers anonymously!
If you're heading north at the speed of light and you shine a laser 180° or south of the direction you're traveling. Does the new light or the light you shine exist only at the point at which it was turned on to where it has moved whilst heading north?
Join in on the conversation!





[Content deleted by author]
At the speed of light though?
No light would be emitted while you are traveling at the speed of light.
Why?
Time slows as you approach the speed of light, or, from the travelers perspective, length contracts. So, to the traveler, there isn't a moment to shine the light while traveling at the speed of light.
So sure then the light would become visible to an observer watching from the south. But only if they watch from the exact point the light point south was enabled?
Since light is a beam, wouldn't the beam still travel away from the origin? I guess if light has mass then it would be included in your velocity and would not disperse from the origin, but that's only if you're assuming that light has mass. Are we in a vacuum? There's lots of things to consider!
I think in a vacuum, I'd like to think that is or might be the safest place to travel at these or this velocity. Secondly, does light have mass? Or is its mass only thought to be measurable because of the matter is passes through/around/off?
It is a lot to ponder, and now I would like a beer.
Well when the neurons begin to fire unusually after that pint have a think and share your thoughts :)
I love this question. Made me think.
It's pretty cool to ponder on. Say for example you deviate the angle of the beam by 45°, if there's forward motion does the beam shower the space with light or.... Flip, who knows...
Yes.
Is this because of relativity?
Yes.
Wow! Okay, thank you. :)