IT WAS IN THE LATE 19th CENTURY THAT LONDON POLICE STARTED USING A SPECIAL WHISTLE TO GET...
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>> Narrator: IT WAS IN THE LATE 19th CENTURY THAT LONDON POLICE STARTED USING A SPECIAL WHISTLE TO GET ATTENTION. IT WAS LIGHTWEIGHT AND HAD A PIERCING SOUND, A REAL IMPROVEMENT OVER THE HAND RATTLES THEY HAD BEEN USING BEFORE. THAT SAME DESIGN IS STILL USED TODAY
Full Transcript
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>> Narrator: IT WAS IN THE LATE
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19th CENTURY THAT LONDON POLICE
00:00:04.134 --> 00:00:05.667
STARTED USING A SPECIAL WHISTLE
00:00:05.667 --> 00:00:07.067
TO GET ATTENTION.
00:00:07.067 --> 00:00:08.867
IT WAS LIGHTWEIGHT AND HAD A
00:00:08.867 --> 00:00:10.867
PIERCING SOUND, A REAL
00:00:10.867 --> 00:00:12.000
IMPROVEMENT OVER THE HAND
00:00:12.000 --> 00:00:13.201
RATTLES THEY HAD BEEN USING
00:00:13.201 --> 00:00:14.004
BEFORE.
00:00:14.004 --> 00:00:16.467
THAT SAME DESIGN IS STILL USED
00:00:16.467 --> 00:00:17.633
TODAY.
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Movie Summary
Television series that documents how various everyday products are made.
