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#4dToys: a #Box of #Four #Dimensional #Toys

We've shared this #video before, but it's one of our favorites on the problem of #visualizing or #conceptualizing higher #dimensional #geometries. The 4th dimension is not always #Time, but is perpendicular to the lower 3. Watch as these objects slip in & out of our #World, like #TimeTravelers!

https://www.youtube.com/watch?v=0t4aKJuKP0Q 02 Jun 2017
https://Wikipedia.org/wiki/Four-dimensional_space