Catch up on stories from the past week (and beyond) at the Slashdot story archive

 



Forgot your password?
typodupeerror
DEAL: For $25 - Add A Second Phone Number To Your Smartphone for life! Use promo code SLASHDOT25. Also, Slashdot's Facebook page has a chat bot now. Message it for stories and more. Check out the new SourceForge HTML5 internet speed test! ×

Comment Re:Please read the article (Score 2, Insightful) 167

Good question about the 22 ns. Unlike the airplane experiments, because the van traveled slowly (60 mph max) and only for a few hours getting to and from the mountain, the relativistic effect due to velocity alone would be about 0.05 ns, or 50 picoseconds. Too small to worry about.

The dominate effect for this experiment, since the van and clocks just sat still a mile-high for the weekend, is the gravitational relativistic effect. The GR time dilation rate is approximately gh/cc, which for an elevation gain of 1340 meters and a stay of 42 hours, comes to about 22 nanoseconds.

More info on the trip is at http://www.leapsecond.com/great2005/

Slashdot Top Deals

The price one pays for pursuing any profession, or calling, is an intimate knowledge of its ugly side. -- James Baldwin

Working...