Article View: alt.folklore.computers
Article #1321Re: Backward Clocks (was Re: Grace Hopper)
From: n874... Matthew Skinner
Date: Mon, 19 Feb 1990 17:08
Date: Mon, 19 Feb 1990 17:08
24 lines
1812 bytes
1812 bytes
In article <77...@tut.cis.ohio-state.edu> John R. Mudd <j...@cis.ohio-state.edu> writes: >[Lots of stuff about Grace Hopper on Letterman] >She also mentioned the clock she had in her office. It ran counter-clock- >wise. Her premise was that it was just a clock, it didn't matter which >direction the hands turned, it simply had to tell time. I've been meaning >to fix a clock to do this someday. > >... John It is easy to modify the big plastic clocks usually found in classrooms, not the synchronized kind, but the ones simply plugged into an outlet. The motor uses a shaded pole magnet to drive the rotor, and this magnet is usually just bolted on to surround it. If you unbolt the magnet, turn it over, and replace the bolts (assuming the holes are symmetrical) the motor will run the opposite direction. Changing the numerals is left up to you... :) Our main terminal room has one synchronized clock, and one generic one. Since they rarely tell the same time anyway, I have been considering modifying the other to run backwards. Should cause a few missed classes. .matthew
Technical Details
Message-ID:
<536@unicorn.WWU.EDU>Path:
mbox-mo1.pugleaf.net!gmdzi!unido!mcsun!sunic!uupsi!rpi!zaphod.mps.ohio-state.edu!usc!cs.utexas.edu!rice!uw-beaver!milton!blake!unicorn!n8741572References:
<77225@tut.cis.ohio-state.edu>Show Full Headers
Complete Article Headers
Path: mbox-mo1.pugleaf.net!gmdzi!unido!mcsun!sunic!uupsi!rpi!zaphod.mps.ohio-state.edu!usc!cs.utexas.edu!rice!uw-beaver!milton!blake!unicorn!n8741572 From: n874...@unicorn.WWU.EDU (Matthew Skinner) Newsgroups: alt.folklore.computers Subject: Re: Backward Clocks (was Re: Grace Hopper) Summary: making a clock run backwards Keywords: shaded pole motor clock Message-ID: <536@unicorn.WWU.EDU> Date: 19 Feb 90 17:08:31 GMT References: <77225@tut.cis.ohio-state.edu> Reply-To: n874...@unicorn.WWU.EDU (Matthew Skinner) Organization: Western Washington Univ, Bellingham, WA Lines: 23 Posted: Mon Feb 19 18:08:31 1990 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit