World Jump Day

World Jump Day was a planned for July 20, 2006 by the same organization event. The organizers claimed to 11:39:13 GMT ( 13:39:13 CEST) more than 600 million people, or wanting to move about one-tenth of the world population, all over the world for the simultaneous jumping. This impact should steer the earth in a different orbit. The consequences should be the reduction of global warming to a minimum, a milder climate worldwide and the lengthening of days to 25 hours.

Physical view

The action is rather questionable from a physical standpoint.

The Earth as a whole system considered is subject ( as every body to which no external force acts ) the principle of conservation of momentum, which states that a closed mechanical system changes its motion behavior, characterized by direction and speed, only due to external force. The jumping people would push the Earth in high jump as much as they would put them on when falling down because of gravity again. To actually change the orbit of the earth, people would jump so high that they leave the earth in outer space; otherwise it remains ( " equal drag force " ) in a zero-sum game because of Newton's third axiom. The total momentum, the all transferred Springer during the jump and the advent to the earth, would be just as large as the ( opposite ) pulse it transferred by gravity to the earth, and the earth would be back in their original position.

Even at a theoretical feasibility of the idea by the way they would in fact still impracticable. The mass of such a number of people compared to the mass of the Earth is approximately the ratio of an ant to the largest aircraft carrier in the world, the USS Ronald Reagan.

Evaluation

After the evaluation, on August 10 there was, as expected by the critics, no lasting effects.

The organizers have also indirectly admitted that the event did not have the goal to really throw the Earth out of orbit, but to get people to a common action.