Hints of the 4th Dimension Have Been Detected by Physicists
January 14, 2018
by Philip Perry
Two different experiments show hints of a 4th spatial dimension.
Physicists have understood at least theoretically, that there may be higher dimensions, besides our normal three. The first clue came in 1905 when Einstein developed his theory of special relativity. Of course, by dimensions we’re talking about length, width, and height. Generally speaking, when we talk about a fourth dimension, it’s considered space-time. But here, physicists mean a spatial dimension beyond the normal three, not a parallel universe, as such dimensions are mistaken for in popular sci-fi shows.
http://bigthink.com/philip-perry/hints-of-the-4th-dimension-have-been-detected-by-physicists