Date: 3/10/2009

Some Informations Of Science-2


16-Let us suppose that a hollow projectile, helding a man such a Jules Verne and wells used on their voyage to the moon should be sent off into pace with a velocity one twenty thousandth less than light. If at the end a year the projectile should be caught like a comet by the gravitation of some star and be wung around and sent back to earth, the man on stepping out of his shell would be two years older, but he would find the world two hunded years older.

17-If speeds that approach the velocity of light make time in a moving system run slower, a superlight velocity should turn the time backward.

18-Let us suppose, for instance, that we are travelling by a train moving at sixty miles per hour. What does that statement mean? Evidently it means that we are passing fixed objects outside, such as railway buffets, trees, telegraph posts at the rate of sixty miles an hour. But these so-called fixed objects are all partaking in the motion of rotation of the earth on its axis. So that with respect to the earth's axis. Our train is moving quite a different way. But even the earth's axis is not fixed inspace. The whole earth is moving round the sun. And the sun and the whole solar system is moving quite rapidly through space towards the star Vega. And Vega and the sun and the whole system of stars of which they form part are in motion with respect to the other system of stars which are themselves moving with respect to one another. There is no absolutely fixed point from which we can measure our motion.Motion is relative.


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