Gravitation, or inclination — the only force in the Universe which cannot be stopped or shielded. She acts everywhere. Even in deep space the space is penetrated by gravitational fields of galaxies and star clusters. However there are ways that even on Earth to have a feeling of freedom from gravitation.
Instruction
1. The easiest way to feel zero gravity — to appear in free fall. Though gravity will act on you — otherwise you would not fall — but you will not feel it. In such state there are astronauts in an orbit. Gravitation of Earth keeps also them, and their space station, without allowing them to depart to interplanetary space. But flight on an orbit in terms of physics is free fall and therefore researchers of space test zero gravity. Under natural conditions free fall from big height usually comes to an end is deplorable. Therefore if you want to feel zero gravity, then you should resort to safer ways.
2. In the car of a roller coaster or in a cabin of the high-speed elevator, moving down, you always experience in the beginning small acceleration. It partially compensates gravity and reduces your weight, from it and there is a feeling well familiar to everyone as if the earth crumbles under the feet. At the true zero gravity this feeling is much stronger, and it proceeds far longer than short seconds in the elevator or on an attraction.
3. Much closer to feelings of astronauts the zero gravity reached on the special plane. Such plane promptly rises in the beginning up, and then also promptly dives down. On all continuation of this diving flight the passengers are in almost true zero gravity. Its difference from "orbital" only in what on the plane will pull you after all, but not down, and up. For one departure the training "weightless" plane does up to ten such calling which pilots call the modes. Though one mode proceeds not so long — about half-minute — it quite is enough to test all scale of feelings from loss of weight. However it is impossible to forget about safety measures: before the end of zero gravity it is necessary to manage to lay down on mats which covered a plane floor. Otherwise it is possible to fall to them with a decent force when the plane begins to leave dive and your weight not only will return, but also will increase at the expense of an overload.
4. The last way, though does not give feeling of zero gravity, but allows to test its main advantage — total freedom of movements in three-dimensional space. It is based on use of Buoyancy force which pushes out any body shipped in liquid. If Buoyancy force is equal in size to gravity, then the body gains zero buoyancy. It can be anywhere in water, rise or plunge. Trainings in water — an important part of training of the true astronauts. For this purpose they should work in special pools under supervision of team of divers. Space suits in which future conquerors of space are in water — almost same what they will carry also in an orbit, but on them are strengthened additional lead cargoes. This ballast is necessary in order that the astronaut did not emerge on a surface, pushed out by water. Divers monitor maintaining zero buoyancy, and in case of need add or remove cargoes.