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Strength of gravity is usually expressed by "g" units. "1g" is equal to the same force of gravity like earth. 0.5 g means half the force of earth's gravity. Thus if you weighed 60 kg on earth you would weigh 30 kg in a 0.5 g environment, and 120 kg in a 2 g environment..
Although a few individuals have lived in 0g for up to a year or so, raising children in 0g will be unacceptable for quite some time, perhaps forever. Children raised in 0 g, or even low-g, would not be able to visit Earth without severe discomfort because their muscles and bones would not be adapted to our gravity field. Children raised in 0 g would probably have very weak bones and muscles. For this reason, any colony must have pseudo-gravity. This can be accomplished by rotation or by very long tethers. Gravity is a force generated by large amounts of mass (for example Earth). A force that is similar to gravity can also be generated by changing velocity, either its magnitude (speed) or direction. While driving a car, if you try to stop it suddenly you will feel a force pushing you forward. If you change the direction of the car suddenly, by taking a sharp turn you can also see the force generated when things on dashboard begins to slide. Amusement park rides take advantage of the "pseudo-gravity" generated by rotation (changing the direction of the velocity continously). |
Author Tug Sezen