The caustic of the tricuspoid, where the rays are parallel and in any direction, is an astroid. |
A meteor is nothing more than a fragment from an astroid or meteoroid that enters Earth's atmosphere. |
An astroid is a specialized case of the general hypocycloid family of curves. |
The astroid is a famous curve that arises in an interesting way. |
The cycloidal curves, including the astroid, were discovered by Roemer in his search for the best form for gear teeth. |
After measuring the first whole magnetic astroid in two dimensions, I found a way to perform measures in all directions of space. |