what would happen if someone moved at twice the speed of light?

 

As far as we know, it’s not possible for a person to move at twice the speed of light. In fact, it’s not possible for any object with the kind of mass you or I have to move faster than the speed of light.

However, for certain strange particles, travelling at twice the speed of light might be possible – and it might send those particles back in time.

A universal speed limit Slot Online Terpercaya

One of our best physical theories at the moment is the theory of relativity, developed by Albert Einstein. According to this theory, the speed of light operates as a universal speed limit on anything with mass. Togel Hari Ini

Specifically, relativity tells us that nothing with mass can accelerate past the speed of light.

To accelerate an object with mass, we have to add energy. The faster we want the object to go, the more energy we’ll need.

The equations of relativity tell us that anything with mass – regardless of how much mass it has – would require an infinite amount of energy to be accelerated to the speed of light.

But all of the sources of energy we know of are finite: they are limited in some respect.

Indeed, it’s plausible the Universe only contains a finite amount of energy. That would mean there isn’t enough energy in the Universe to accelerate something with mass up to the speed of light.

Since you and I have mass, don’t expect to be travelling at twice the speed of light anytime soon. 

Tachyons

This universal speed limit applies to anything with what we might call “ordinary mass”.

There are, however, hypothetical particles called tachyons with a special kind of mass called “imaginary mass”.

There is no evidence tachyons exist. But according to relativity, their possible existence can’t be ruled out.

If they do exist, tachyons must always be travelling faster than the speed of light. Just as something with ordinary mass can’t be accelerated past the speed of light, tachyons can’t be slowed down to below the speed of light.

Some physicists believe that if tachyons exist, they would constantly be travelling backwards in time. This is why tachyons are associated with time travel in many science fiction books and movies.

There are ideas that we might someday harness tachyons to build a time machine. But for now this remains a distant dream, as we don’t have the ability to detect potential tachyons.