Essay Database

… the first international award given yearly. The award consists of not only a medal, but also a personal diploma and a prize amount of money. This prize was named after a man named Alfred Bernhard Nobel. He was born in Sweden in 1833. At age nine he and…

… or reciprocating motion from one part of a machine to another. Two or more gears, transmitting motion from one shaft to another, constitute a gear train. At one time various mechanisms were collectively called gearing. Now, however, the word gearing…

… is a study of the Infrared Radiations emitted from celestial objects. All objects from trees, buildings on the earth to distant galaxies emit infrared radiation. The cosmic dust particles block the view of the visible universe such as the center of…

… to be related to the issue of infinity and finiteness. The number of points in a line served as the logical floodgate which led to the development of Set Theory by Cantor at the end of the 19th century. It took almost another century to demonstrate the…

… Introduction The purpose of this lab is to determine: *<Tab/>the coefficient of friction between a rubber stopper and a wooden ramp *<Tab/>the coefficient…

… since ancient times for pumping water, grinding grain and transportation. Windmills (wind turbines) can now even generate electricity! I chose this topic because it seems that the whole world should be running off wind generated power. It is cleaner…

… emitted when matter is hit with a jolt of electricity. Such experiments involved transmitting electric arcs between two ends of cathode ray tubes. Some physicists discovered some substances that spontaneously emitted invisible rays regardless of electric…

… was needed in order for a theory to be supported. Whilst experimenting with electrical currents in 1819, he discovered that when a current passed through wire, it deflected the directional needle of a compass. This was the first time magnetism…

… between electricity and magnetism, and that one could not exist without the other. Through his studies he came to believe that there was no such thing as the ether, and he did not believe that matter was a physical substance. Rather, he felt that…

… machine, which could create energy out of nothing. If this might sound silly now , ...well , humanity needed quite a long time to realise that this is impossible! In fact, during many centuries, thousands of people have tried building such a machine…