"The mass of a body is a measure of its energy content," Einstein concluded, suggesting that radioactive materials like radium may provide a means to test this idea. "If the theory corresponds to the facts, radiation conveys inertia between emitting and absorbing bodies." Click here
for a copy of this brief paper.
The International Union of Pure and Applied Physics declared 2005 the World Year of Physics, kickstarting a global celebration of physics and its importance on the 100th anniversary of Einstein's "miracle year." The American Physical Society, the American Association of Physics Teachers, and the American Institute of Physics are leading efforts in the United States.Einstein@Home
, the astronomical screensaver that uses your computer in the search for gravitational radiation, is one way to join in. Einstein predicted the radiation's presence, and now astronomers believe they have the tools to detect it from nearby neutron stars. But they need your help. Einstein@Home's software uses some of your computer's time to search for gravitational signals from state-of-the-art observatories in Hanford, Washington; Livingston, Louisiana; and Hanover, Germany. (Once you have it installed, you can even join Team Astronomy
.) For more details, see Trudy Bell's overview
at the IEEE web site.