One scheme was the Nipkow disk, and [Bitluni] decided to build a working demonstration of how such a system works. Essentially, there’s a spinning disk with a spiral pattern of holes in it.

Breakthroughs, discoveries, and DIY tips sent every weekday ... As the matter gathers, a spinning disc called an accretion disc is forming. This is the first time that astronomers have seen ...

Breakthroughs, discoveries, and DIY tips sent every weekday ... making contact slightly off center to start a counterclockwise spin. The spinning disc generates a centrifugal force that keeps ...