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what is a wormhole?

Wormholes are solutions to the Einstein field equations for gravity that act as "tunnels," connecting points in space-time in such a way that the trip between the points through the wormhole could take much less time than the trip through normal space.

The first wormhole-like solutions were found by studying the mathematical solution for black holes. There it was found that the solution lent itself to an extension whose geometric interpretation was that of two copies of the black hole geometry connected by a "throat" (known as an Einstein-Rosen bridge). The throat is a dynamical object attached to the two holes that pinches off extremely quickly into a narrow link between them.

This analysis forces one to consider situations...where there is a net flux of lines of force through what topologists would call a handle of the multiply-connected space and what physicists might perhaps be excused for more vividly terming a ‘wormhole’.

– John Wheeler in Annals of Physics

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Friday, October 17, 2008

Homework

Here is an explanation of the school homework policy for the average student. Students should not spend more than ninety minutes per night. This time should be budgeted in the following manner if the student desires to achieve moderate to good grades in his/her classes.

15 minutes looking for assignment.

11 minutes calling a friend for the assignment.

23 minutes explaining why the teacher is mean and just does not like children.

8 minutes in the bathroom.

10 minutes getting a snack.

7 minutes checking the TV Guide.

6 minutes telling parents that the teacher never explained the assignment.

10 minutes sitting at the kitchen table waiting for Mom or Dad to do the assignment.
Posted by Sarat Kumar at 7:39 AM 0 comments
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