What happens if you turn a light on at the speed of light?

If you drove a car close to the speed of light relative to the ground (neglect air effects) and turn on the headlights, light would leave your headlights at speed c the way it always does. To you in the speeding car, the light would be traveling away at speed c. The moving car actually gets squashed front to back.

Does the speed of light depend on the source?

The speed of light depends on the refractive index of the medium. If a medium is denser than the refractive index of that medium will be more and thus the speed of light that medium will be less. The speed of light is also independent of the velocity of the source.

Do lights work at the speed of light?

The light from your headlights will always go at the speed of light in your reference frame. It will strike any object in its path and be reflected back.

Why does Lightspeed stop time?

The speed of light is very fast (300,000 km/s or 670,000,000 mph), far faster than any speed that a typical human experiences relative to the stationary observer. In the limit that its speed approaches the speed of light in vacuum, its space shortens completely down to zero width and its time slows down to a dead stop.

Why does time move slower at the speed of light?

As light is spread out by the observer moving away from the source of the light time is decreased. The faster the observer moves the more light is spread out and time slows down. Phillip E. Time slows down as you travel faster because momentum bends the fabric of spacetime causing time to pass slower.

What happens when an object speeds at the speed of light?

For the one speeding nearly at the speed of light, this effect becomes more significant. The squared ratio of velocity of the object to the velocity of light in vacuum determines the extent of this effect to be observable. This means that the velocity should be nearly equal to light to make a vast difference in length, mass and time.

What does it mean if the speed of light is 10\%?

It means that if an object moves at a velocity that is 10\% of the speed of light, then it would experience an increase in its mass by 0.5\% of its original mass.

What is the effect of speed on time and length?

The time runs slower and length contracts for the one who is speeding. For the one speeding nearly at the speed of light, this effect becomes more significant. The squared ratio of velocity of the object to the velocity of light in vacuum determines the extent of this effect to be observable.

Why do particles have zero mass at the speed of light?

That is why all the particles that move at the speed of light (e.g. photons) have zero rest mass. As a particle with mass approaches the speed of light, its energy increases and becomes infinite at the speed of light, which is the reason why it can never be accelerated to reach that speed.