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| Thread ID: 101245 | 2009-07-06 10:19:00 | Physics Question | Adamnz (12260) | PC World Chat |
| Post ID | Timestamp | Content | User | ||
| 789571 | 2009-07-07 23:03:00 | It appears that for many, rubbish is the only thing they pick up at school. ;) Very good!:):) |
Richard (739) | ||
| 789572 | 2009-07-08 08:58:00 | 5 pages of replies... and I've not bothered to read beyond page 1. The answer however is no, the impulse applied to the object would not be instantly transferred to the other end. Point one - the mass to be moved in any physical object with a length equivalent to 1 light year would be incredible. You could belt the end of it so hard that it moves a foot and splinters, but that impulse would be transmitted in a wave of compression (and some recoil). Gotta remember - atoms in a molecule do not touch each other - they float with respect to each other, with some degree of equilibrium. The wave of compression would be somewhat absorbed, and delayed by the interation between atoms. Light remains the fastest, with the advantage of travelling in the lightest medium. However, a quantum 'entangled' pair of atoms is believed to achieve what you're after. Problem is, entangled pairs have to be made together (in the same place), and then seperated... so you'd have to have some device carry them a light year before they can be used to instantly communicate across that light year distance. E.T. won't be phoning home just yet. |
Paul.Cov (425) | ||
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