en.wikipedia.org/wiki/Four-dimensional_space

A four-dimensional space or 4D space is the simplest possible generalization of the observation that one only needs three numbers, called dimensions, ...

www.pitt.edu/~jdnorton/teaching/HPS_0410/chapters_2017_Jan_1/four_dimensions/index.html

The one dimensional interval; The two dimensional square; The three dimensional cube; The four dimensional cube: the tesseract; Stereovision; Summary table ...

www.tech-faq.com/what-are-the-four-dimensions.html

Mar 11, 2016 ... The four dimensions are concepts in mathematics to describe different shapes. It is easy to understand a first dimension, second dimension and ...

www.forbes.com/sites/quora/2016/12/07/einstein-could-easily-think-in-four-dimensions-and-its-a-skill-most-people-can-train

Dec 7, 2016 ... In an online lecture, a professor mentioned that Einstein could draw or imagine a 4-dimensional figure. How can one possibly do that?

www.pbs.org/wgbh/nova/blogs/physics/2014/04/how-many-dimensions-does-the-universe-really-have

Apr 3, 2014 ... However, once she derives the equation for how their light moves through space, she finds that it is best expressed in four dimensions. Then ...

www.quora.com/How-can-one-visualize-4-dimensional-space

As 3-Dimensional beings, we cannot visualize 4-Dimensional space, ... So, when a four dimensional object passes through our world, we would witness a 3 ...

futurism.com/new-perspectives-imagining-a-4d-world

Oct 24, 2013 ... Even for those of us with the most powerful visual imaginations, trying to picture how a four-dimensional object would look in a ...

vividlife.me/ultimate/33464/the-four-dimensions-of-wellness

May 26, 2013 ... There are four dimensions of wellness, do you know what they are? Read on to find out...