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[narrator] When Fleming's device
is fitted into the radio receiver, only the electricity flowing
in one direction gets through, the needle doesn't get pulled
back to zero by the reversing current
is fitted into the radio receiver, only the electricity flowing
in one direction gets through, the needle doesn't get pulled
back to zero by the reversing current
Full Transcript
00:00:01.000 --> 00:00:04.555
[narrator] When Fleming's device
is fitted into the radio receiver,
00:00:04.587 --> 00:00:07.437
only the electricity flowing
in one direction gets through,
00:00:07.047 --> 00:00:11.313
the needle doesn't get pulled
back to zero by the reversing current.
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Movie Summary
From a piece of meteorite found in Tutankhamun's tomb to the Crown of Thorns, explore some of the most perplexing and unusual objects lying hidden away in museums, laboratories and storage rooms.