Posted by **charlie** on Monday, October 11, 2010 at 3:28pm.

I read this in a write-up of an experiment using atomic clocks:

To reveal these effects, required the use of highly accurate atomic clocks, calibrated to check that they are perfectly in sync with each other – ticking down the nanoseconds (that's one billionth of a second: 0.000 000 001 seconds) in complete unison. One clock was taken on a trip around the world, whilst the other one stayed at the NPL in Teddington.

"When the two clocks were reunited, according to Einstein's theories, they should no longer be in sync - the clock that travelled around the world should be ahead of the stationary clock by a significant amount."

I thought the opposite would be true?

Am I correct?

- Physics, relativity -
**drwls**, Monday, October 11, 2010 at 3:48pm
Yes, you are quite correct. Congratulations for noticing that error by whoever wrote it.

Here is a more accurate press release about that experiment.

http://www3.open.ac.uk/media/fullstory.aspx?id=19636

- Physics, relativity -
**charlie**, Monday, October 11, 2010 at 4:09pm
Thanks Drwls, but that's the press release I spotted the error in. I think!

## Answer This Question

## Related Questions

- art - How does this art convey a message of time being lost? ( there is clocks ...
- programming - Application: Pendulum Clocks Pendulums used in clocks, such as ...
- math - a clockmacker must wind his clocks on a regular schedule. he winds some ...
- Chemistry Subatomic particles - Fill in the chart (Numbers correspond to each ...
- Calculus - The management of Lorimar Watch Company has determined that the daily...
- Calculus - The management of Lorimar Watch Company has determined that the daily...
- Math - In a shipment of alarm clocks, the probability that one alarm clock is ...
- algebra 2 - In a shipment of alarm clocks, the probability that one alarm clock ...
- physics - Time standards are now based on atomic clocks. A promising second ...
- physic - Hi,could anyone help me with this questin please. Thank you so much. ...

More Related Questions