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Is time really the fourth dimension?
According to Einstein , you need to describe where you are not only in three-dimensional space* — length, width and height — but also in time . Time is the fourth dimension. So to know where you are, you have to know what time it is.
Is time different from space?
We all measure our experience in space-time differently. That’s because space-time isn’t flat — it’s curved, and it can be warped by matter and energy. And for astronauts on the International Space Station, that means they get to age just a tiny bit slower than people on Earth. That’s because of time-dilation effects.
Is there a dimension without time?
It’s for this reason that time is necessary to be contemplated, as well as why you can’t have a dimension without time. Same with us — except while we’re aware that there is a fourth dimension, there’s nothing we can do to move intentionally through it. An example of how light flows through Einstein’s spacetime theory.
How is 1 hour in space 7 years on earth?
The first planet they land on is close to a supermassive black hole, dubbed Gargantuan, whose gravitational pull causes massive waves on the planet that toss their spacecraft about. Its proximity to the black hole also causes an extreme time dilation, where one hour on the distant planet equals 7 years on Earth.
Is time the fourth dimension?
Time is, by definition, a temporal dimension and is fundamentally different than the three spatial dimensions we know. It is problematic to consider time the “fourth” dimension because that implies that it can be treated the same as the other three dimensions. The three spatial dimensions measure where things are in relation to a physical point.
What is the difference between time and spatial dimensions?
The three spatial dimensions measure where things are in relation to a physical point. They describe the physical size of an object. One’s location in these three dimensions may be changed freely. Time is a temporal dimension that allows us to describe change. It describes where something is in relation to other temporal events, a
What is the difference between time and space?
There are two ways that time, as a dimension, is different from space. The first way is a small one: you can’t put space (which is a measurement of distance) and time (which is a measurement of, well, time) on the same footing without some way to convert one to the other.
How many dimensions are there in the universe?
But our Universe isn’t made up merely of three space dimensions, but of four spacetime dimensions. It’s easy to look at that and say, “oh, well, three of them are space and one of them is time, and that’s where we get spacetime,” and that’s true, but not the full story.