Quote:
Originally Posted by Mutt
link me to an article about this theory. i cant even comprehend what a 4D universe is or looks like. i've heard the 4th dimension explained but i don't really understand it.
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The best way I can explain it is this: imagine a 1D world (a single line), where you can only move forward or backward. This is "one dimension": length. Now imagine a 2D world (a grid/graph), where you can move forward and backward, but also side to side: length and width. Next, imagine a 3D world, where you can move forward or backward, side to side, and also up and down. This would be akin to giving three-dimensional coordinates (x, y, z) as in "3 miles west, 5 miles south, and 50 feet in the air".
Now, let's expand it to 4D, by adding time. If you gave me a place in three dimensions to meet you, you might say:
Meet me in the building at the corner of
31st street (width) and
5th avenue (length), on the
12th floor (height)
I'd arrive there, but who knows when? I'd have to wait indefinitely for you to arrive, or vice versa. Now, let's add a FOURTH dimension (time):
Meet me in the building at the corner of
31st street (width) and
5th avenue (length), on the
12th floor (height), at
3:00pm (time).
Now I know exactly WHERE and WHEN to meet you.
