tag:techtv.mit.edu,:Array/220262980 2009-06-11 14:02:02 -0400 MIT Department of Physics Technical Services Group An air puck is attached to a string that passes through the center of an air table. A weight is attached to the end of the string. The ball is set into rotation in a horizontal circle. When the weight is released, creating a constant force inwards, the radius of the path is shortened and the puck speeds up. A similar effect is seen when the string wraps around a center rod like a tether ball. This creates an increasing force, which causes the puck to inspiral more quickly. 181 tag:techtv.mit.edu,:Array/220241920 2009-08-20 10:57:46 -0400 MIT Department of Physics Technical Services Group A sand-carrying cart on a track leaves a trail of sand when it travels over a rotating table. This demonstrates the Coriolis Effect. <br><br> For more, watch <a href="http://techtv.mit.edu/videos/3714-the-coriolis-effect">The Coriolis Effect</a>. 74