Something a bit similar was first published by Nick Hood in 2007. Here is a copy:
http://www.sciencebuddies.org/science-fair-projects/project_ideas/Phys_p056. shtml Here is Nick's website: http://cullaloe.com/ Some people use marshmallows. Dave > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Chris Albertson > Sent: Sunday, June 23, 2013 20:36 > To: Discussion of precise time and frequency measurement > Subject: Re: [time-nuts] Measuring speed of light or > reproducing a metre > > I think one classic way to measure the speed of light is to build a > resonant microwave cavity. Measure the physical dimensions > VERY accurately > and then measure the resonant frequency. > > > On Sun, Jun 23, 2013 at 4:41 PM, Bob Camp <[email protected]> wrote: > > > Hi > > > > Pulse -> (fast) LED > > LED -> splitter > > splitter -> 2 (fast) photo diodes > > > > Start with the diodes in the same plane, calibrate out the > systematic > > delays. Likely with a deliberate offset (coax cable length). > > > > Move one detector and note the change in time. Distance > would be highly > > dependent on how fast your LED is and how fast your detectors are. > > > > Bob > > > > On Jun 23, 2013, at 7:03 PM, Jim Palfreyman > <[email protected]> wrote: > > > > > Hi all, > > > > > > With a 3325B, a 5370B, and other time-nut miscellany, > what's the quickest > > > way you can come up with to measure the speed of light OR > reproduce the > > > metre. > > > > > > I've got some ideas, but I'd like others' thoughts. > > > > > > Jim > > > _______________________________________________ > > > time-nuts mailing list -- [email protected] > > > To unsubscribe, go to > > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > > and follow the instructions there. > > > > _______________________________________________ > > time-nuts mailing list -- [email protected] > > To unsubscribe, go to > > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > > > > > -- > > Chris Albertson > Redondo Beach, California > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
