On Mon, 18 Feb 2008 22:03:30 -0800, Jeff Mock wrote: >Today's astronomy picture of the day says that future experiments in the >new ISS Columbus laboratory include an atomic clock to measure miniscule > timing effects:
> http://antwrp.gsfc.nasa.gov/apod/ap080219.html >Does anyone know somthing about the sort of clock they're going to put >in the new lab? Presumably they'll also need a way to do time transfer >and make precise timing measurements. If I lived on a space station I >would demand an atomic clock. >jeff ------------------------------------------------------------------------------------------------------------------- Jeff, sure you mean 'ACES' and 'PHARAO' the projected oscillator system in space. If you search for 'ACES' Atomic Clock project in the internet, you will find a lot of freely available details. Atomic Clock Ensemble in Space, ACES, an ESA mission, is an ultra-stable laser cooled Caesium atomic clock that will be placed on the International Space Station ISS and operated in the microgravity environment. Quote: "Specific applications in atomic time scales will be developed based on the ACES provided capability to compare primary frequency standards with a frequency resolution at the level of 10-17, synchronise ground clocks at 100 ps level and contribute to international time scales." Look for details at e.g. 'ACES Fact Sheet' http://www.skolelinux.es/trac/wiki/Clock and the document 'Atomic Clock Ensemble in Space (ACES)' http://www.spaceflight.esa.int/users/downloads/factsheets/fs031_10_aces.pdf 'ACES Mission: Scientific Objectives and Applications' http://www.congrex.nl/07A06/abstracts/CXNL_07A06_new.htm Of interest as well: http://www.metrologiefrancaise.com/en/research-topics/time-frequency.asp Have fun, regards Arnold, DK2WT _______________________________________________ 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.