http://www.scivee.tv/node/2155 en http://www.scivee.tv/node/3025 <p>The very notion of "now" is relative. For more information, see the World Year of Physics 2005 feature.</p> <div class="og_rss_groups"><ul class="links"><li class="first last og_links"><a href="/node/6212" class="og_links">CyberRaiders Math</a></li> </ul></div><p><a href="http://www.scivee.tv/node/3025">read more</a></p> Mathematics Education NSF Video Community CyberRaiders Math Fri, 05 Oct 2007 15:03:52 -0700 nsf 3025 at http://www.scivee.tv http://www.scivee.tv/node/3007 <p>Is time different to observers moving at different speeds? For more information, see the World Year of Physics 2005 feature.</p> <div class="og_rss_groups"><ul class="links"><li class="first last og_links"><a href="/node/6212" class="og_links">CyberRaiders Math</a></li> </ul></div><p><a href="http://www.scivee.tv/node/3007">read more</a></p> time dilation Mathematics Education NSF Video Community CyberRaiders Math Thu, 04 Oct 2007 12:56:43 -0700 nsf 3007 at http://www.scivee.tv http://www.scivee.tv/node/2415 <p>TIME DILATION: an experiment with mu-mesons</p> <p>This classic film documents an experiment done in 1963 the results of which can only be explained when one accepts the consequence that moving clocks run slow. This phenomenon is known as time dilation. The timekeeping device is the mu-mesona, a subatomic particle with origins away from the Earth moving at relativistic speed. What follows here is an explanation of the experiment described in that film.</p> <div class="og_rss_groups"><ul class="links"><li class="first last og_links"><a href="/node/6811" class="og_links">Science History</a></li> </ul></div><p><a href="http://www.scivee.tv/node/2415">read more</a></p> altitude aluminum amplifier atmosphere average cables Cambridge charged radioactive particles chart circuit clock speed clocks cloth Commission on College Physics contraction of moving length cosmic rays intensity counter data-taking David H. Frisch decay pulses decay time distribution deflection plates detection distribution of decay time effects Einstein time dilation elapsed flight time elapsed time electrical signal electron beam expanded scale function iron James H. Smith light reflection Massachusetts Massachusetts Institute of Technology meson life microseconds MIT moving clocks run slow Mt. Washington mu-mesons National Science Foundation New Hampshire nuclear interactions open shutter oscilloscope pattern photo multiplier photocell plastic Polaroid camera positron radioactive decay register relativity Richard Knowles rocket ruler sample Science Teaching Center scope beams sea level signal simulator single exposure spacial relativity speed of light square root of 1 - r squared over c squared string time time dilation time scale UI University of Illinois voltage Mathematics Education Universal Science CyberRaiders Math Science History Fri, 14 Sep 2007 17:04:01 -0700 scivee-team 2415 at http://www.scivee.tv