A sub-femtosecond stop watch for 'photon finish' races
Using a system that can compare the travel times of two photons with sub-femtosecond precision, scientists at the Joint Quantum Institute and Georgetown University have found a remarkably large difference in the time it takes photons to pass through nearly identical stacks of materials with different arrangements of refractive layers. The technique could provide an empirical answer to a long-standing puzzle over how fast light crosses narrow gaps that do not permit the passage of conventional electromagnetic waves.
Republican presidential candidate Sen. John McCain has chosen Gov. Sarah Palin to be his running mate. She would be the first woman to serve on a Republican presidential ticket.
AFP - Nigerian President Umaru Yar'Adua's anti-corruption drive has claimed another scalp with news Friday of the arrest of an ex-governor who allegedly embezzled millions of dollars of state funds.
AP - The NBA officially handed over the Seattle franchise to Oklahoma City about two months ago, and three trucks arrived downtown at headquarters on Friday.
