<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div><span>Laser Pulses Create More Accurate Atomic Clocks</span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;"><br><span></span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;">The ultimate accessory in exact timekeeping — the atomic clock — is set
to become even more precise, after ultrashort laser pulses were
successfully transmitted across open air to help synchronize the
"ticking" of new optical atomic clocks.</div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;"><br></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;">In the future, optical atomic clocks could be used for satellite-based
experiments to prove Einstein's theory of general relativity.</div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;"><br></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;"><a href="http://spacewatchtower.blogspot.com/2013/06/laser-pulses-create-more-accurate.html">http://spacewatchtower.blogspot.com/2013/06/laser-pulses-create-more-accurate.html</a></div><div> </div><div>gaw<br><br></div><div>Glenn A. Walsh, Project Director,<br>Friends of the Zeiss < http://friendsofthezeiss.org ><br>Electronic Mail - < siderostat1989@yahoo.com ><br>SpaceWatchtower Blog: < http://spacewatchtower.blogspot.com/ ><br></div></div></body></html>