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Head phones

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JAM MAN 12
1275422.  Sat Feb 24, 2018 1:40 pm Reply with quote

Interestingly the head phone in it's current form (well at least as of 2016) hasn't really changed much since the early 20th century. It is actually a very simple divice and easy to build one at home.

see:
https://www.wired.com/2016/09/physics-earphone-jack-works-just-time-say-goodbye/

and
http://www.bbc.co.uk/news/magazine-35253398


Last edited by JAM MAN 12 on Mon Feb 26, 2018 2:31 am; edited 1 time in total

 
JAM MAN 12
1275425.  Sat Feb 24, 2018 1:48 pm Reply with quote

Further news, the word jack in earphone jack supposedly came from the name given to the small mechanized man who strikes the bells on old clocks.

See for this info:
https://mashedradish.com/2016/09/09/why-do-we-call-them-headphone-jacks/

The mechanised bell ringers:
https://en.wikipedia.org/wiki/Jacquemart_(bellstriker)

 
Jenny
1275542.  Sun Feb 25, 2018 1:39 pm Reply with quote

That is interesting! Welcome to the forums Jam Man 12 :-)

 

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