How can you find the fourth dimension?

Answer 1

actually no you'd have to be going a lot slower than the speed of light

Answer 2

I can tell you exactly why we have 4 dimensions, but I need to say what a dimension is first.

Dimension is actually a really weird concept. The easiest way to to think of it is, "how many numbers do I need to describe something fully". This is one of the many, many definitions that dimension has.

If you want to describe a point in space, you would think that you need three numbers. This could be latitude, longitude, and elevation. This gives you a set of three numbers that can tell you, exactly, where an point on earth is. So might want to know where a point in a big room is, and there, latitude, longitude, and elevation is a bad choice. There, you might chose your first number to be how far north of the door you are, the second number to be how far east you are, and the third number to be how high off the ground you are. Generally, physicists like to think in coordinates like this, as they are easier to do certain calculations. At first, it seems like three numbers would give you enough information to describe a point. If, magically, a ball was seven feet north of the door, and five feet east of the door, and two feet off the ground you could say that its coordinates are (7,5,2).

Here's the problem. If a person was running though the room, they would not agree with a person who was standing still about where the ball is. If you want the running person and the still person to be able to talk to each other, that is, have some calculation you can do to make their numbers agree, you need to bing in a fourth dimension, time.

Wiki "lorentz transformation" for more information.

Answer 3

There are three conventional spatial dimensions: length (or depth), width, and height, often expressed as x, y and z. x and y axes appear on a plane Cartesian graph and z is found in functions such as a "z-buffer" in computer graphics, for processing "depth" in imagery. The fourth dimension is often identified with time, and as such is used to explain space-time in Einstein's theories of special relativity and general relativity. When a reference is used to four-dimensional co-ordinates, it is likely that what is referred to is the three spatial dimensions plus a time-line. If four (or more) spatial dimensions are referred to, this should be stated at the outset, to avoid confusion with the more common notion that time is the Einsteinian fourth dimension.

Answer 4

The fourth dimension is time, you're in it...

Answer 5

You are flying through it at the speed of light. Open your eyes

Source=Brian Greene I think.

Answer 6

It's time, so just wait a second.