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A dramatic and surprising magnetic effect of light discovered by University of Michigan researchers could lead to solar power without traditional semiconductor-based solar cells. William Fisher, a doctoral student in applied physics, performing research on laser-induced magnetism. The researchers found a way to make an "optical battery," said Stephen Rand, a professor in the departments of Electrical Engineering and Computer Science, Physics and Applied Physics. In the process, they overturned a century-old tenet of physics. "You could stare at the equations of motion all day and you will not see this possibility.
Bill Andrews has spent two decades unlocking the molecular mechanisms of aging. His mission: to extend the human life span to 150 years--or die trying By Joseph Hooper Posted 08.02.2011 at 10:58 am Youth Elixir: Bill Andrews examines one of tens of thousands of compounds he has screened for anti-aging properties John B.
Index to Physics Notebooks Back to Physics Demonstrations' Home Page Acceleration A+0+0 "Coin and Feather" fall in an evacuated rotatable tube. A+0+5 Timed free fall: Ball drops 2 meters through electronic timing gate. A+0+10 Atwood machine: Unbalanced weights on a pulley accelerate slowly.
previous home next PDF Michael Fowler , UVa Physics 2/29/08 Suppose we want to synchronize two clocks that are some distance apart. We could stand beside one of them and look at the other through a telescope, but we’d have to remember in that case that we are seeing the clock as it was when the light left it , and correct accordingly. Another way to be sure the clocks are synchronized, assuming they are both accurate, is to start them together.