Sir Robert Ball
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Ep. 134 – Parallax
If both clocks were correct, one would be redundant. Topics in this episode include the Ballast Office, the timeball, stellar parallax, ships’ navigators and chronometers, the whereabouts of the timeball, the political controversy of Greenwich Mean Time, Dunsink time, Sir Robert Ball and The Story of the Heavens, what the heck parallax actually means, how…