Tim Hosgood on Nostr: In 1947, Van Der Pol calculated 29 zeroes of the Riemann–Zeta function on the ...

In 1947, Van Der Pol calculated 29 zeroes of the Riemann–Zeta function on the critical line... by electromechincal methods: spinning a specifically shaped disc at a specific frequency and shining light through to be received by a photocell. This is incredibly similar to how mechanical televisions work!

the paper: https://www.ams.org/journals/bull/1947-53-10/S0002-9904-1947-08920-5/S0002-9904-1947-08920-5.pdf