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Natural Science If we consider following the development of natural science we can notice how peoples viewing of the world change through the time. By this rapid and vast multiplication of the commodities and conveniences of existence, the general standard of comfort has been raised; the ravages of pestilence and famine have been checked; and the natural obstacles, which time and space offer to mutual intercourse, have been reduced in a manner, and to an extent, unknown to former ages. There once was a statement that heavens (universe beyond the earth) are physically different from the earth. The first serious attempts to solve such questions after Archimedes, Hipparchus, and Ptolemy, of Aristotle and of Galen, naturally enough arose among the astronomers and the physicians. The researches of Galileo put those discussions to the end.
Ancient astronomers thought that the orbits of the planets were circular. It is now known that the orbits are elliptical, though the orbits of most planets are almost circular. The Earth's orbital eccentricity the extent to which it departs from a perfectly circular path is very slight. But the orbits of Mercury and Mars are more eccentric. And the Pluto is the only planet that has a markedly elliptical orbit. Comets also move around the sun in elliptical orbits.
It was proven by Kepler. Now we use Kepler's laws as the pavement of this statement. Tides are caused by the difference between the Moon's gravitational pull on the two sides of the Earth. Tidal forces are gradually slowing down the Earth's rotation. Tidal forces are gradually increasing the size of the Moon's orb. Time is absolute, and relative, but never universal.
The Newton's Laws of Motion shows us how and why the scale of time is naturally. And the Albert Einstein's relativity of time is defended against those who think of time as a universal absolute that extends beyond its proper frame the inertial frame. Heavy objects fall to the ground faster than lighter objects. It is so because of the gravity force. The speed of falling object depends on it mass and it can be clearly seen from the formula of gravitation force.
The Newton's universal gravitation equation to calculate the force of gravity Fgrav = m g. The law of universal gravitation states that gravitational force between masses decreases with the distance between them, according to an inverse-square law. In addition, the theory notes that the greater an object's mass, the greater its gravitational force on another mass. The Newtons theory was and is used for such calculations: where the bodies are moving slowly with respect to the speed of light and the gravitational field is weak and unchanging with time. Albert Einstein's theory of relativity is a set of two theories in physics: special relativity and general relativity.
These theories were conceived in order to explain the fact that electromagnetic waves do not conform to the Newtonian laws for motion. The main idea of both theories is that two observers who move relative to each other will measure different time and space intervals for the same events, but both will observe the content of physical law the same. This theory allowed people to calculate the objects moving in the space. Now we are facing the new problem connected to the expansion of the universe the time of traveling from planet to planet. The way from one planet to another took now more time than a human life can last.
It is necessary to find new ways for traveling through the space. As for the two citations I think that the first one and the third belonged to Science and the second belonged to the Pseudoscience. I think so because in the first and the third quotation have a clear thesis completed with theoretical information and the exposition of information is logical. In the second quotation I see no logic at all. The statement is simply absurd.
Free research essays on topics related to: gravitational force, albert einstein, time and space, universal gravitation, natural science
Research essay sample on Time And Space Albert Einstein
