What is the gravitational constant?
The gravitational constant concerns the observed physical behavior or quality that explains the level of gravitational stroke between objects. Basically, all two objects with matter will promote some gravitational move; It is a force that keeps the ground turning around the sun before driving to nothing. The gravitational constant, known as G, explains the amount of stroke or attraction that one object has on the other when multiplied by the mass of both objects and divided the square of distance between two objects.
Hunt for the gravitational constant was captivated by many of the most amazing minds in science for most of the 17th and 18th century. According to legend, the way to discover the gravitational constant by bet between three important scientists - Sir Christopher Wren, Edmund Halley and Robert Hooke - through the orbital paths of the planets. Halley, inspired, decide to visit the worshiped Professorisaac Newton for help that revealed not only the right answer, but that he solved the problem some time ago, but somehow noted the notes. Halley pressed NewTona to look at this matter again, and to receive considerable credit for the inspiration of Newton's publication Philosophiae Naturalis Principia Mathematica, one of the most persistent scientific works of human history.
Although Newton's principle was theorized to the presence of a gravitational constant, it did not answer the question of the mathematical value of G. More than 70 years after Newton's death, a brilliant and fascinating eccentric scientist named Sir Henry Cavendish inherited a machine to measure Earth's density. The machine was the design of another scientist, Reverend John Michell, who died before he could complete his experiments. A wonderfully complex machine, which was reportedly talked, should be observed in operation from another room to prevent contaminating the results, helped create not only the desired density results, but also led to future calculations of the gravitational constant.
Cavendish's calculations were not quite correct, but also with the 21st century technology. The gravitational constant remains one of the most difficult physical constants to be measured. Scientists have revised the calculations several times during the temporary centuries and arrived in a widely accepted mathematical expression G = 6,667428 x 10 in seconds and s = s = s = s = s = s = s = s = s = s = s = s = s = s = s = s = s = s = s = s = s = s = s = s = s = s = s = s = s = s = s = s = s = s = s = s = s = s = s = s = s = s = s = s = s = s = s = s = s = s = s s = s = s and sup> and sup> with