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Unformatted text preview: black hole, however, it all takes place quite quickly. All information is lost for something falling into a black hole. No communication of any kind can ever take place across the event horizon. More implications: Because gravity can bend light (by bending the space around it), gravity acts in the same way a lens does. However, a gravitational lens has a different equivalent geometry than an ordinary lens has. We so in fact see evidence of gravitational lenses in space by seeing the distorted images distant quasars and galaxies. In fact, gravitational lensing is so prevalent that it is a useful too for astronomers in measuring the mass of distant objects. It is one of the very few ways that mass can be directly measured besides Kepler’s third law....
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This note was uploaded on 03/02/2011 for the course ASTRO 10 taught by Professor Norm during the Spring '06 term at Berkeley.
- Spring '06