The sound of the collision from a billion light-years away is the first direct evidence of gravitational waves, the ripples in the fabric of space-time that Einstein predicted a century ago.
posted by blacklotus90 8 years 2 months 3 weeks ago • 778 views • 4:36Videos (51) | Sift Talk (0) | Blogs (0) | Comments (1000) |
YouTube: Why is there a bright spot behind spherical objects?
posted by PlayhousePals 8 years 6 months 3 weeks ago • 60 views • 7:20Using Schlieren optics to show sound waves. How it works and setup at- http://sciencedemonstrations.fas.harvard.edu/icb/icb.do?keyword=k16940&pageid=icb.page93268&pageContentId=icb.pagecontent221620&state=maximize&view... continue reading
posted by newtboy 9 years 5 months 1 week ago • 769 views • 2:32Hank explains how a recent astronomical discovery made in Antarctica could change what we know about the birth of the universe, and the rules of physics that govern it. (Youtube)
posted by Fantomas 1 decade 1 month 2 weeks ago • 658 views • 3:59These are fascinating creatures. I decided to post this upbeat look upon learning of the immense and tragic losses suffered after a recent heat wave. Here is the news story on that event if you're interested:... continue reading
posted by PlayhousePals 1 decade 3 months 3 weeks ago • 544 views • 2:25YouTube Description: Ted Kravitz explained the flag waves by the Marshall during the course of a Grand Prix.
posted by Aard Vark (oritteropo) 1 decade 1 year ago • 212 views • 2:18YouTube Description: What happens when single photons of light pass through a double slit and are detected by a photomultiplier tube? In 1801 Thomas Young seemed to settle a long-running debate about... continue reading
posted by Aard Vark (oritteropo) 1 decade 1 year 1 month 3 weeks ago • 251 views • 6:00YouTube Description: Light is so common that we rarely think about what it really is. But just over two hundred years ago, a groundbreaking experiment answered the question that had occupied physicists... continue reading
posted by aaronfr 1 decade 1 year 2 months 1 week ago • 1,437 views • 7:40Sixty Symbols covers "the strange world of de Broglie waves and particles."
posted by Skeeve 1 decade 2 years 11 months 3 weeks ago • 2,645 views • 6:56Thomas Young is best known to us today for the double slit experiment that showed light behaves like a wave. He also did some important, if a bit "was he insane?!" experiments about how the eye works... ... continue reading
posted by RFlagg 1 decade 3 years 3 months 1 week ago • 1,876 views • 6:23