I don't, but by that point it was a solve problem - speed-of-light is certainly fast enough, especially with optional pre-bias correction term based on distance. 300,000 km/s, say 6000 km, approx 20ms.. It's also oddly similar to the 50 Hz sample rate.
Wikipedia says 'precise clocks' which I would guess was quartz clocks on the back of radio synchronization. It was definitely well within the capabilities of the scientists of this period to precisely calibrate against radio wave time delays from London, Australia, etc.
I don't, but by that point it was a solve problem - speed-of-light is certainly fast enough, especially with optional pre-bias correction term based on distance. 300,000 km/s, say 6000 km, approx 20ms.. It's also oddly similar to the 50 Hz sample rate.
Wikipedia says 'precise clocks' which I would guess was quartz clocks on the back of radio synchronization. It was definitely well within the capabilities of the scientists of this period to precisely calibrate against radio wave time delays from London, Australia, etc.