tag:techtv.mit.edu,:Array/185602380 2008-03-05 11:07:43 -0500 MLK Celebration 2009 <p>Keynote Speech from Rev. Dr. Ray Hammond.</p><p>Read more about the event <a href="http://web.mit.edu/newsoffice/2008/mlk-main-0226.html" target="_blank">here</a>.</p> 2201 tag:techtv.mit.edu,:Array/185574520 2008-07-11 16:51:41 -0400 MIT Department of Physics Technical Services Group <p>An cathode ray tube (CRT) television is connected to a video camera. When a strong magnet is brought close to the television screen, the image becomes warped and discolored.</p><p>While many new televisions use flat screen technology, older CRTs produced images by firing electron guns (one red, one green, one blue) through the television body onto the back of the screen. When a magnet is brought close to the screen, it deflects the paths of the electron beams and distorts the picture. A strong enough magnetic field can even create a hole in the electron beams, causing a black spot on the picture. </p><p>This TV has been subject to many magnet encounters, which has permanently damaged the picture. </p> 96 tag:techtv.mit.edu,:Array/185525020 2009-06-12 15:38:50 -0400 MIT Department of Physics Technical Services Group Subatomic particles such as cosmic ray muons, alpha particles, and high energy electrons are striking our bodies all the time. In the cloud chamber, these particles ionize air molecules, creating delicate cloud trails by condensing supersaturated alcohol vapor. This is similar to the way condensation trails are formed in the sky behind airplanes. <br><br> This is about as close as you'll ever get to seeing subatomic particles with your own eyes... 157