The Challenge: Record a Sound or Voice
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How do we play it back?
that you have something recorded onto the wax cylinder it's now time to
try and play it back. After coming to the end of the wax, we carefully
removed the drawing pin stylus and made sure that it was well away from
the cylinder. We wound the handle in the other direction so that the wax
cylinder was brought back to the start position. The stylus was put back
carefully onto the start of the groove but this time slightly less deep
than we had it for recording. We turned the handle at the same rate and
direction as we did when we recorded the sound and listened. The stylus
will pick up a noise from the groove but on top of that noise, if you
are very lucky, you will hear your recording.
The producers are not responsible for the content of external websites.
Edisonís Phonograph from the Bizarre Stuff webpages
Tinfoil.com - dedicated
to the preservation of early recorded sounds
Phonograph Makersí Pages
Waves and Music from the Physics Classroom website
the ear on the Central California Ear, Nose and Throat Medical Group
Physics by Tom Duncan, John Murray 2000; ISBN: 0719576695
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