Also known as mouhefanggai or the Steinmetz solid, this shape appeared in the first Chinese explorations of the volume of a sphere
by Evelyn Lamb via Scientific American
by Jason Marshall, Quick and Dirty Tips.com via Scientific American
“This website allows you to explore vector fields in real time.
“Vector field” is just a fancy way of saying that each point on a screen has some vector associated with it. This vector could mean anything, but for our purposes we consider it to be a velocity vector.
Now that we have velocity vectors at every single point, let’s drop thousands of small particles and see how they move. Resulting visualization could be used by scientist to study vector fields, or by artist to get inspiration!”