Einstein showed that it is the relative time. But … why is this?

No, not 20 m / s. The ball is transferred to them at 30 m / s (i.e. 10 + 20). A lot for a good sense. The difference comes from the fact that it is measured from “different reference frameworks”, one moves and the other is fixed.

This is all good, though; Everyone agrees on the result. If the ball hit the person, it will count the various and the leader at the same time. Yes, people in the car see the ball moving slowly, but they also see the archive moving towards them (from their point of view), so they do the same in the end.

This is another preliminary hypothesis for the specific relativity: Physics is the same for all reference tires or specific for all “self -deficiency” or other than registration. Observers can move at different speeds, but this speed must be fixed.

However, you may now be able to know why the speed of light is the same for all observers regardless of their movement.

Waves in an empty sea

How Einstein got this crazy idea? I will show you two reasons. The first is that light is an electromagnetic wave. Physicists have long defined that light behaves like a wave. But the waves are Brokers You need water for the “wave” in the ocean waves. Sound waves need air. The media has been removed and there is no wave.

But then, how did the sun pass through space? In the nineteenth century, many physicists believed that there should be space and contact them ether Because it is fun.

In 1887, Albert Michelson and Edward Morley invented a smart test of perfume. They built a device called the overlapping scale that divides a beam of light by half and sends half into two ways with equal lengths, floating and merging mirrors again, such as:

Photo: Rhett allain