99% of the mass of the human body is made up of only six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus. Every organic molecule contains carbon. Since 65-90% of each body cell consists of water (by weight), it isn’t surprising that oxygen and hydrogen are major components of the body.
Carbon is a nonmetal that can bond with itself and many other chemical elements, forming nearly ten million compounds.
Mathematicians of XVIIIth century proved that numbers 31; […]
According to the laws of gravity, the moon technically does not orbit the Earth. The two bodies actually both orbit around their common centre of gravity, which is located 1,000 miles beneath the surface of the Earth and is on a straight line between the centres of the Earth and moon. The centre […]
In 1905 Albert Einstein wrote his famous Special Theory of Relativity. It was published in a scientific journal that same year, but took many years to gain general acceptance. In fact, it was not verified by actual experiment until 25 years later. Two years after that paper was published, Einstein wanted a job as […]
In 1903, Albert Michelson, one of the 19th century’s top physicists, commented “The more important fundamental laws and facts of physical science have all been discovered, and these are so firmly established that the possibility of their ever being supplemented in consequence of new discoveries is exceedingly remote”. Two years later, Einstein published his revolutionary […]
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