A tiny mirror solved the Atlantic telegraph’s weak signal problem
In 1854, physicist William Thomson (later Lord Kelvin) devised the mirror galvanometer to solve the problem of weak signals in long submarine telegraph cables. Instead of boosting electrical power at the sending…
Ashin Xavier: interesting
IO Repro: Repro test v4 after fix 2 Oct. Safe to trash.
IO Repro: Repro test v3 after fix 2 Oct. Safe to trash.
IO Repro: Repro test after fix 2 Oct. Safe to trash.