What is the 4th dimension?............if the 3rd dimen.........is the visible world u see fit to sexually harass me in.....................................................and includes everything u can see, hear, touch, etc.........what is the 4th d??  Beyond the visible..............a hypercube is said to be 2 3d cubes...................a cube in the 4th dimension.........is called a hypercube.........by some people anyways......

One time or another: Our best 5 theories of the fourth dimension | New ...

https://www.newscientist.com/.../2120135-one-time-or-another-our-best-5-theories-of...

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Feb 1, 2017 - One time or another: Our best 5 theories of the fourth dimension. What is time and why does time flow? Is it just an illusion? Answering these questions is still one of physics' greatest challenges. clock. Anthony Harvie/Getty. By Anil Ananthaswamy. “Time is what prevents everything happening at once.

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How to Get to the Fourth Dimension - Scientific American

https://www.scientificamerican.com/article/how-to-get-to-the-fourth-dimension/

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Jul 31, 2015 - Things to Make and Do in the Fourth Dimension: A Mathematician's Journey through Narcissistic Numbers, Optimal Dating Algorithms, at Least Two Kinds of Infinity, and More, by Matt Parker. Farrar, Straus and Giroux, 2015; 464 pages. Mathematics popularizer Matt Parker, an Australian based in England, ...