What Is Time? - How does time work?
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What Is Time?
Time is a measure of non-prevent, regular change in our environment, commonly from a specific viewpoint.
whilst the concept of time is self-glaring and intuitive – the consistent passing of activities before our eyes; the orbit of the Moon around our planet – describing its fundamental nature is a whole lot more difficult.
Even physicists are not positive what sincerely occurs while time passes. although they do have a few hypotheses.
How does time work?
For centuries, time was regarded as a constant, independent force, as if the Universe's progress is governed by a single clock.
This description of time changed in 1905 with Albert Einstein's theory of special relativity.
While the passing of time was already known to be closely connected to space, this monumental theory was the first to combine space and time into a single field, one with measurements that vary depending on the relative motion or gravitational forces of objects within it.
Basically, that means time is relative.
Is time real?
two human beings moving at the identical speed will every agree their measures of distance and time match. As one character modifications speed, but, they'll see the opposite's degree of time and distance alternate, at the same time as their own remains the same.
without any reason to prioritize one attitude of time over another, this means time isn't always a regular accepted unit at all. it's far a relative measurement that varies as gadgets move faster or slower, or as they are subjected to more or less gravity.
Gravity curves space and time: The more potent the gravity, the more it curves area-time, and the extra time slows down.
you could see an instance of this in the photo underneath, which indicates Earth's mass curving area-time.
this is why people on board the worldwide space Station, which is in addition from Earth's gravity, age very barely slower than those in the world.
IS TIME TRAVEL POSSIBLE?
Is time journey feasible? quick solution: sure, and you're doing it proper now — hurtling into the destiny at the fantastic charge of one second according to 2nd.
you are quite a good deal constantly shifting thru time at the same speed, whether or not you're looking paint dry or wishing you had greater hours to visit with a pal from out of city.
however this isn't the type of time journey this is captivated endless technology fiction writers, or spurred a style so good sized that Wikipedia(opens in new tab) lists over 400 titles in the category "films approximately Time tour." In franchises like "physician Who," "big name Trek," and "lower back to the destiny" characters climb into some wild car to blast into the beyond or spin into the future. as soon as the characters have traveled via time, they grapple with what takes place if you change the past or present primarily based on facts from the future (that's where time travel testimonies intersect with the concept of parallel universes or alternate timelines).
CAN TIME BE REVERSED?
yes, you sincerely can turn back time—with a catch. a new paper indicates that time can clearly waft ahead and backward. Microscopic systems can obviously evolve toward lower entropy, which means they could go back to a previous kingdom. people do not perceive those micro phenomenons at the quantum degree.
Time in black hole
near a black hole, the slowing of time is extreme. From the viewpoint of an observer outside the black hole, time stops. as an instance, an object falling into the hole could appear frozen in time at the brink of the hole.
Why is there a future and a past?
According to scientists, we are now traveling in time past to future
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