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Blog post: swansont: Meet the Old Clock Synchronization, Same as the New Clock Synchronization

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Before we could synchronize clocks at the speed of light (or something reasonably close to it), we had the sound of bells, like Big Ben.

 

Time corrections for Big Ben's chime

 

When Big Ben was built in 1859, charts were issued to show the allowance that had to be made for the sound of the bell, traveling at ~768 mph, to reach different parts of London.

 


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