Was the Great Pyramid a Giant Crystal Oscillator?

David Sereda believes the Great Pyramid’s dimensions conceal a lost musical scale—and that its stone layers worked like a vast crystal oscillator. In this conversation, he follows that idea from the pyramid’s slope angle and the speed of light to harmonic frequencies, vortex coils, zero-point energy and his accounts of contact with distant stars. It is a wide-ranging conversation about the patterns Sereda says he found, the devices he built to test them, and where he thinks the search could lead.