<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:10pt"><div style="" class=""><span style="" class="">New U.S. Atomic Clock World's Most Accurate</span></div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif; background-color: transparent; font-style: normal"><br style="" class=""><span style="" class=""></span></div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif; background-color: transparent; font-style: normal"><span style="" class="">The </span>National Institute of Standards and
Technology (NIST) has officially launched a new atomic clock, called
NIST-F2, to serve as a new U.S. civilian time and frequency standard. NIST-F2 would neither gain nor lose one second in about 300 million
years.</div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif; background-color: transparent; font-style: normal"><br></div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif; background-color: transparent; font-style: normal"><a href="http://spacewatchtower.blogspot.com/2014/04/new-us-atomic-clock-worlds-most-accurate.html">http://spacewatchtower.blogspot.com/2014/04/new-us-atomic-clock-worlds-most-accurate.html</a></div><div style="width:450px; font-family: 'Georgia', 'Times', 'Times New Roman', 'serif';" id="enhancrCard_0" class="link-enhancr-attachment link-enhancr-element" contenteditable="false"><table class="link-enhancr-element" style="width:450px; height:170px; position: relative; margin-top:5px; margin-bottom: 5px; display: block;" cellpadding="0"
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href="http://spacewatchtower.blogspot.com/2014/04/new-us-atomic-clock-worlds-most-accurate.html" class="link-enhancr-card-urlWrapper link-enhancr-element" style="text-decoration: none !important; color: #000000 !important;"><span class="link-enhancr-element link-enhancr-card-title" style="margin: 0; font-weight: normal;margin-bottom: 4px; font-size: 18px; line-height: 21px; max-height: 43px; color: #000000; overflow: hidden !important; display: inline-block;">SpaceWatchtower: New U.S. Atomic Clock World's Most...</span></a><div style="font-size: 13px; line-height: 20px; color: #999999; max-height: 81px; font-family: 'Georgia', 'Times', 'Times New Roman', 'serif';overflow: hidden;" class="link-enhancr-card-description link-enhancr-element">Caption:
National Institute of Standards and Technology physicists Steve
Jefferts (foreground) and Tom Heavner with the NIST-F2 'cesium fountain'
...</div></div></div></td><td class="link-enhancr-element" rowspan="2" style="width: 1px; background-color: #e5e5e5;"><div class="link-enhancr-element" style="width: 1px; background-color: #e5e5e5;"></div></td></tr><tr><td class="link-enhancr-element" style="width: 100%; vertical-align: middle; font-family: 'Arial', 'Helvetica Neue', 'Helvetica', 'sans-serif';"><div class="link-enhancr-element" style="font-size: 0pt; padding: 7px 20px 9px 15px;"><a href="http://spacewatchtower.blogspot.com/2014/04/new-us-atomic-clock-worlds-most-accurate.html" class="link-enhancr-card-url link-enhancr-element" style="color: black; text-decoration: none !important;cursor:pointer !important;" target="_blank"><span class="link-enhancr-element link-enhancr-view-on" style="display: inline-block; line-height: 11px; max-width: 179px; min-width: 119px; overflow: hidden; max-height: 13px; word-break: break-all;"><span class="link-enhancr-element link-enhancr-mobile-no-resize"
style="vertical-align:middle; font-size: 9px; line-height: 11px; color: #999999; -moz-text-size-adjust: none; -ms-text-size-adjust: none; -webkit-text-size-adjust:none; text-size-adjust:none;">View on <span style="font-weight: bold" class="link-enhancr-view-on-domain">spacewatchtower.bl...</span></span></span></a></div></td><td class="link-enhancr-element" style="vertical-align: middle; width: 100px; font-family: 'Arial', 'Helvetica Neue', 'Helvetica', 'sans-serif';"><div class="link-enhancr-element link-enhancr-preview-wrapper" style="padding: 9px 20px 12px 0px; max-width: 100px; min-width: 80px; overflow: hidden; text-align: right; line-height: 11px; max-height: 13px; font-size: 0pt;"><span class="link-enhancr-element link-enhancr-preview-by link-enhancr-mobile-no-resize" style="vertical-align:middle; font-size: 9px; line-height: 11px; color: #999999; -moz-text-size-adjust: none; -ms-text-size-adjust: none; -webkit-text-size-adjust:none;
text-size-adjust:none;">Preview by Yahoo</span></div></td></tr><tr class="link-enhancr-element"><td class="link-enhancr-element" colspan="6" style="height: 1px; background-color: #e5e5e5;"><div class="link-enhancr-element" style="height: 1px; background-color: #e5e5e5;"></div></td></tr></tbody></table></div><div> </div><div style="" class=""> </div><div style="" class=""><h3 style="" class=""><font style="" class="" size="3">2014: 75th Year of <a style="" class="" rel="nofollow" target="_blank" href="http://buhlplanetarium.tripod.com/">Pittsburgh's Buhl Planetarium</a></font></h3><br style="" class="">gaw</div><div style="" class=""><br style="" class="">Glenn A. Walsh, Project Director,<br style="" class=""></div><div style="color:rgb(0, 0, 0);font-size:13px;font-family:arial, helvetica, clean, sans-serif;background-color:transparent;font-style:normal">Friends of the Zeiss < <a style="" class="" rel="nofollow" target="_blank"
href="http://buhlplanetarium.tripod.com/fotz/">http://buhlplanetarium.tripod.com/fotz/</a> ><br style="" class="">Electronic Mail - < siderostat1989@yahoo.com ><br style="" class="">SpaceWatchtower Blog: < <a style="" class="" rel="nofollow" target="_blank" href="http://spacewatchtower.blogspot.com/">http://spacewatchtower.blogspot.com/</a> ><br style="" class="">SPACE & SCIENCE NEWS, ASTRONOMICAL CALENDAR:<br style="" class="">< <a style="" class="" rel="nofollow" target="_blank" href="http://buhlplanetarium.tripod.com/#news">http://buhlplanetarium.tripod.com/#news</a> ><br style="" class="">Twitter: < <a style="" class="" rel="nofollow" target="_blank" href="https://twitter.com/spacewatchtower">https://twitter.com/spacewatchtower</a> ><br style="" class="">Facebook: < <a style="" class="" rel="nofollow" target="_blank"
href="http://www.facebook.com/pages/SpaceWatchtower/238017839577841?sk=wall">http://www.facebook.com/pages/SpaceWatchtower/238017839577841?sk=wall</a> ><br style="" class="">Author of History Web Sites on the Internet --<br style="" class="">* Buhl Planetarium, Pittsburgh: <br style="" class=""> < <a style="" class="" rel="nofollow" target="_blank" href="http://buhlplanetarium.tripod.com/">http://buhlplanetarium.tripod.com</a> ><br style="" class="">* Adler Planetarium, Chicago:<br style="" class=""> < <a style="" class="" rel="nofollow" target="_blank" href="http://adlerplanetarium.tripod.com/">http://adlerplanetarium.tripod.com</a> ><br style="" class="">* Astronomer, Educator, Optician John A. Brashear:<br style="" class=""> < <a style="" class="" rel="nofollow" target="_blank" href="http://johnbrashear.tripod.com/">http://johnbrashear.tripod.com</a> ><br style="" class="">* Andrew Carnegie & Carnegie Libraries:<br
style="" class="">< <a style="" class="" rel="nofollow" target="_blank" href="http://andrewcarnegie.tripod.com/">http://andrewcarnegie.tripod.com</a> ><br style="" class="">* Civil War Museum of Andrew Carnegie Free Library:<br style="" class=""> < <a style="" class="" rel="nofollow" target="_blank" href="http://garespypost.tripod.com/">http://garespypost.tripod.com</a> ><br style="" class="">* Duquesne Incline cable-car railway, Pittsburgh: <br style="" class=""> < <a style="" class="" rel="nofollow" target="_blank" href="http://inclinedplane.tripod.com/">http://inclinedplane.tripod.com</a> ><br style="" class="">* Public Transit:<br style="" class=""> < <a style="" class="" rel="nofollow" target="_blank" href="http://andrewcarnegie2.tripod.com/transit">http://andrewcarnegie2.tripod.com/transit</a> ></div></div></body></html>