![]() Why? You'll need to follow this closely.Īccording to quantum mechanics, one system can be correlated to another. The "stuff" (information and energy) in each of these areas constitutes a "system."īut this creates a further conundrum for physicists. "There's stuff inside the black hole, stuff just outside the black hole and stuff that's been radiated and is farther away from the black hole," Page says. Since that time, the physics community has determined that both energy and information do escape from black holes. But in the 1970s, physicists began to realize that this idea doesn't jibe with a central principle of quantum mechanics: information is never lost. Traditionally, it was thought a black hole's gravitational force was so strong that nothing - not even light - could escape its boundary, known as the event horizon. Hawking doesn't want to do away with the idea of black holes, just with the current definition, explains Page. He mentions Page time in an effort to explain the significance of a recent article by his former supervisor, Stephen Hawking, in which the renowned physicist pronounced, "There are no black holes." Sci-fi fans everywhere can relax, though. "I like to say they named it for me because I'm such an old guy." "It's longer than the age of the universe," says the University of Alberta physicist, whose area of expertise is cosmology and theoretical gravitational physics. ![]() It's the time it would take for a black hole to emit half its radiation. Don Page has a unit of time named after him: Page time. ![]()
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