Donuts and laser beams
In materials research, considerable progress is made by exploiting insights from the field of topology: Similar tools can now be applied to lasers
01-Mar-2022 -
A donut is not a bun. From a mathematical point of view, they are two fundamentally different objects: The donut has a hole, the bun does not. A circle inside the donut around its hole in the center cannot be shrunk to a point. An arbitrary circle inside the bun, however, can.
The mathematical ...
laser physics
lasers
topology