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This is the acorn from which the light-beam piano
oak grew; the 1931 "Radio Trillion-Tone Piano", AKA the "Radio Organ
of a Trillion Tones" invented by A. Lesti and F. Sammis of the USA.
It's a bit less elaborate than the light-beam piano and instead of
glass disks with wave forms printed on them it used whirling slits
spaced to produce different frequencies as a beam of light travelled
through them to a photoelectric cell.
It never really caught on, however.
That's probably because being capable of generating a trillion tones
made practicing the scales a nightmare. |
