Saturday 30 March 2013

Space and universe

Today, I will discuss about the real 2d objects  and extend it to the universe and the space.




First, I want to explain two dimensional objects. Actually, a two dimensional object is the edge of a three dimensional object. So, the shape formed by the edges of the base of a cube is 2 dimensional. But for conviencience we take plane figures like square as two dimensional.

Now , answering the question which says that whether the space and the universe have boundaries or not.

According to me, the space and the universe have boundaries and the universe is still expanding and will expand forever.

To explain this I will take the example of a cube and a 2 d object.

We know that the cube is 3 d . Now, lets take a small square paper and stick it on the cube . We know that the edges of the paper form a 2d object.

Now, if the side of the square paper is bigger than the side of the cube , it could still be paste on the cube as the extra side of the paper could be folded on the other side of the cube.

So, we see that the 3d object could hold 2d object. If we apply this rule to higher dimension , this rule still holds. So, the universe is expanding in a space which is finite. They both have boundaries.

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