Britain once forgot how long an inch is
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摘要
In 1834, Parliament burned down, and the Standards of Measurement were melted or destroyed. So when there's no agreed-upon standard for length: how do you fix it? Also: how you can still publicly check the length of your sandwich.
Filmed safely: https://www.tomscott.com/safe/
There's a correction to this video: the fraction on screen at 00:49 should be 1/299792458. Looks like I copied and pasted an extra 1 and didn't realise it. Apologies. You can see all the corrections for this channel at https://www.tomscott.com/corrections/
Story research by Jess Jewell
SOURCES:
Report of the Commissioners Appointed to Consider the Steps to Be Taken for Restoration of the Standards of Weight and Measure, 1841, https://books.google.co.uk/books?id=4xVSAAAAcAAJ
A Collection of the General Public Statutes, 1855, https://books.google.co.uk/books?id=UDCaqwCgBKcC
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