Interference between synchronous laser beams provides the basis for an optical lattice. The eccentric weights gives this on a macroscale.
On Fri, Jul 14, 2023 at 2:58 PM Robin <mixent...@aussiebroadband.com.au> wrote: > >Hi, > > PS - the dimensions of the solid should be such that it is resonant for > the frequency of the sound. > Buy electric cars and recharge them from solar panels on your roof. > >
