On Tuesday, February 21, 2017 11:13:34 AM Rhoderick Beery wrote: > Greetings Time-Nuts! > > I'm a physics theorist interested in performing an experiment to measure > the gravitational time dilation beneath the surface of the Earth. Boulby > Labs in the UK is 1.1 km down which would generate a time differential from > the surface on the order of 1 part in 10^15 -- not much to work with! > > I've investigated measuring redshift/blueshift from lasers but our > wavemeter technology is no where near accurate enough. I've concluded that > my best solution is to use atomic clocks, of which I know very little > about. I thought a clock-enthusiast mail group would be a fantastic way for > me to learn about the subject as well as possibly spur ideas on the lab > test design itself. > > Thanks in advance!! > ------- > Rhoderick Beery > direct: 402-817-9363 > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the > instructions there. Rhoderick
If you have a dark fiber or 2 between the surface and the lab and a pair of sufficiently stable lasers (one at the surface and one in the underground lab) you could look at the change in beat frequency between the lasers (around 50Hz for a pair of red lasers). Bruce _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.