Question about speed of light?

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Discussion Overview

The discussion revolves around the behavior of light when emitted from a theoretical light source traveling at or near the speed of light. Participants explore the implications of such scenarios, particularly focusing on what happens to the emitted light in relation to the moving source.

Discussion Character

  • Exploratory
  • Debate/contested

Main Points Raised

  • One participant questions what happens to light emitted from a theoretical car traveling at the speed of light, asking if the light would remain stationary or move forward.
  • Another participant clarifies that traveling at the speed of light is not possible for massive objects and suggests considering a speed of 0.99c instead, noting that light would still move at speed c relative to both the car and an observer on the road.
  • A participant rephrases the question to inquire about a light source traveling at the speed of light, requesting a simplified explanation.
  • Another participant asserts that the premise of a light source traveling at the speed of light is impossible, implying that such scenarios cannot yield factual answers based on accepted physics.
  • One participant reiterates that a light source cannot travel at 100% of the speed of light.

Areas of Agreement / Disagreement

Participants generally agree that a light source cannot travel at the speed of light, but there is disagreement about the implications of light emitted from objects moving at relativistic speeds.

Contextual Notes

The discussion is limited by the theoretical nature of the questions posed and the assumptions about the behavior of light in extreme conditions. There are unresolved aspects regarding the interpretation of light behavior in relation to moving sources.

Who May Find This Useful

Readers interested in the theoretical implications of relativity, the nature of light, and the limits of physical laws may find this discussion relevant.

tutondrius
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question about speed of light?

speed off light is a constant, so if theoretically we travel in empty space in a theoretical car on a theoretical road (no drag) with the speed of light and we turn on the head lights of the car, what would happen? The light form the head lights will stay on one place or it is going to move forward, faster then me, also faster than itself?

p.s. sorry for the bad English
 
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tutondrius said:
speed off light is a constant, so if theoretically we travel in empty space in a theoretical car on a theoretical road (no drag) with the speed of light and we turn on the head lights of the car, what would happen? The light form the head lights will stay on one place or it is going to move forward, faster then me, also faster than itself?
Forget about a car traveling at the speed of light--that can't happen. Instead, say the car traveled at 0.99c with respect to the road, where c = the speed of light. If you turn on the lights, the observer in the car will see the light move at speed c with respect to the car. An observer on the road will also see the light move at speed c with respect to the road.
 


ok let me change the question. Only theoretically if a light source is travailing 100% the speed of light. What is happening with the light in the direction it is travailing. And please explain it like you would to a moron.
 


tutondrius said:
ok let me change the question. Only theoretically if a light source is travailing 100% the speed of light.
I assume you want a factual answer based on accepted physics? If so, the premise of the question is impossible, as things such as light sources cannot travel at the speed of light.
 


Even theoretically light source cannot travel at 100% of the speed of light.
 


ok 10x very much. :D
 

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