These Clocks Helped Measure the World

Comments · 137

• DE

  @devttyUSB0 · 3 years ago

  Keith is a legend. Amazing to hear him tell these stories with Adam. Thanks Keith, and Adam!

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• ST

  @stephenoran2019 · 3 years ago

  "Longitude" by Dava Sobel is a great book about the development of reliable time devices and the reason they were so desperately needed.

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• AS

  @asicdathens · 3 years ago

  Harrison, the guy who invented the marine chronometers invented also the bimetallic pendulum as well ( actually he made the first usable one since the idea predated him). He fine-tuned his pendulums by having one in freezing cold (in the winter) and another one near a fireplace at full blast

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• BO

  @bonibroco1076 · 3 years ago

  <a href="https://www.youtube.com/watch?v=cj3ZUeMVPCs&amp;t=693">11:33</a> The &quot;chain drive&quot; is called a fusée. It compensates for the diminishing torque of the mainspring as it winds down maintaining the rate regardless of changes in the drive force.

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• UN

  @unequallmpala4572 · 1 year ago

  The thing I love about clock museums is that the clocks are almost always running, even though it’s an artifact on display it’s still diligently doing its job

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• IG

  @igotapochahontas · 3 years ago

  Remember those pop quizzes in school that you felt totally unprepared for? That&apos;s how this curator feels about Adams questions. &nbsp;Lol. But he&apos;s doing great

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• AG

  @agimasoschandir · 3 years ago

  For those not in the know, Brady Haran has many a youTube channel, including one called Objectivity which deals with objects or other works at The Royal Society

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• JL

  @jllaine · 3 years ago

  The chain drive is wrapped around the spring barrel in a tapering helix. &nbsp;A wound up spring exerts a lot of force, so the chain starts in a track with a wide radius. &nbsp;As the spring unwinds, its pull reduces, so the helical track&apos;s radius diminishes to allow consistent tension on the chain.

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• CC

  @CC-gg4oj · 3 years ago

  Adam, as much as I love your build videos; I must say that these type of museum show and tell videos are the icing on the cake! Love the the Royal Society series. Cheers.

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• BL

  @bluplacebo · 3 years ago

  I love Adams curiosity, fascination, enthusiasm and knowledge he brings to these videos. He has a tremendous respect for the objects and their history, and I believe that the Royal Institute recognizes those qualities and shows him the same respect. It&apos;s wonderful to see.

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• CL

  @cliveloosley8018 · 3 years ago

  I spent many many hours as a child in the clock room at the Greenwich Maritime Museum in London after school, just watching John Harrison’s superb chronometers… And although they are works of art in their own right, it was the obvious tiny modifications, alterations, and tool marks that told the real story of their development…

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• EC

  @EchoEWest · 3 years ago

  The purpose of the changing radius on the chain drum is to offset the reducing torque produced by the mainspring as it unwinds.

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