what is the time? | Direct science

Time is the apparent progression of events from the past to the future. Although it is not possible to fully define the nature of time, we all share many common experiences bound up with time: causes naturally lead to consequences, we remember the past but not the future, and the evolution of time appears to be continuous and irreversible.

Is time related?

Einstein’s special theory Relativity The experience of the flow of time revealed that it was relevant to the viewer and their situation. Previously, Isaac Newton’s mission assumed that there was a “master clock” that kept synchronized time throughout the universe. This clock was not supposed to actually exist, but the concept allowed Newton’s equations to work. The main idea is that all viewers can agree at the same time, According to the Internet Encyclopedia of Philosophy (Opens in new tab).

However, to build work before him, Einstein Found that time is relevant. In special relativity, moving clocks run slow; The faster you move in space, the slower you will progress over time. The closer you get to the speed of light, the greater the effect.

Einstein in his special theory of relativity showed that two observers could not agree on events simultaneously. This can be understood through this map. On the left, a train box with a person named Alice is shown. Alice drives a light bulb in the middle of the car and notices light beams coming from both ends of the car at the same time, T2. Although we see the train moving with speed v on the platform from Bob’s view on the right, as the train moves to the right, the rear of the train first intercepts the light on the left, T1 T1 does on time. So in Bob’s view, the events that Alice witnessed simultaneously occur one after the other. (Image credit: Mark Carlick / Science Photo Library via Getty Images)

In the decades since Einstein first proposed this concept, physicists have made numerous measurements that prove this effect. The atomic clock in the jet plane ticks at a slower speed than it does on the ground. A subatomic particle called a muon does not last long enough to travel through the atmosphere, when it forms. Cosmic rays Air molecules hit the ground. But because mions travel close to the speed of light, they seem to last longer in our view, thus allowing them to complete their journey.

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