Quote:
Originally Posted by DrRocket
I don't think so.
When you say "gravity acts across 4D" I think you are referring to the description of gravitation n general relativity as the curvature of a 4-dimensional manifold.
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What I meant was a reference to the video where it was stated that dark matter is the result of gravitational pull of the extra-universal matter(my wording). Hence across 4D (a dimension other than our 3D). I understand your concept of time being the 4th dimension. However the video deals with multi-verses and actual Euclidean extra dimensions (not time). Listen to the video again and note the 2D pond analogy.
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"They reasoned that an object situated at the center and related equally to the extremes in every direction can have no impulse to move in any specific direction. In fact, they compared the situation of such an object with that of a man violently but equally hungry and thirsty, standing at the same distance from food and drink and unable to decide in which direction to move." -
Aristotle