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Who Discovered Hydrogen?

Who Discovered Hydrogen?
Known as an odorless, colorless and nonmetallic flammable gas, hydrogen is one of the most abundant elements in the universe. This element is important to the formation of stars belonging in the main sequence. However, the gas is very rare in our planet. The chemical element has various industrial uses. Moreover, the element is important to the discovery of the atomic structure. To learn more about this element, it is best if we start with the history of the discovery of hydrogen. Historical Background Who discovered hydrogen? Henry Cavendish discovered the element in 1776. He found out that various elements including hydrogen composed water. Cavendish also discovered the gas from a certain metal-acid experiment that he performed. Antoine Lavoisier named the gas hydrogen in 1783 when he and Pierre-Simon Laplace proved the findings of Cavendish that water could be produced when the gas is burned. The element was first liquefied in 1898 by James Dewar. He did this with the use of a vacuum...

Who Discovered the Constellation Pegasus?

Who Discovered the Constellation Pegasus?
Do you think history can tell you who discovered the constellation Pegasus? Actually, if you look back and check the records, you wouldn’t find an actual person who discovered the constellation Pegasus. Why? Because this constellation wasn’t actually discovered years ago. Rather, it was invented. Patterns in the Sky No More Originally, the ancient Greeks see the constellations as patterns to be read and examined. But, it was learned that these so-called patterns were actually fixed areas that you can find covering the entire sky. There are about eighty eight (88) modern constellations and Pegasus is one of them. It is also included in the forty eight (48) constellations as listed and invented by the famed Greek astronomer Claudius Ptolemy during circa 150 A.D. The Naming of the Constellation Yes, it was Ptolemy who invented the Pegasus constellation. Ptolemy was known to be the first to call a group of stars as such. The name Pegasus is a beautiful winged horse included in Greek mythology....

Who Discovered Gold?

Who Discovered Gold?
Introduction Gold is a chemical element, the most ductile and malleable of all pure metals in the world. It is found in grains or nuggets in rocks and other natural formations. Gold has a bright yellow color. The hue varies from one type of gold to another, as does its value. Arabian gold and Bangkok gold may be considered superior to Italian or Chinese gold. Nothing on earth is more fascinating and desirable to humans than gold. Because gold occurs in an uncompounded form, it was probably the first metal ever discovered and used by man. Discovery and Early Use of Gold Gold occurs in various parts of the world. No single person discovered gold but there are many traces of its use by ancient peoples. One early reference to it was made by Tushratta, a king of Mitanni (now northern Syria) in 2600 BC. He remarked that there was more gold than dust in Egypt. Such abundance of gold especially in Nubia made Egypt a rich country. By 1500 BC the metal was being used as a means of exchange in...

Who Discovered the Constellation Aries?

Who Discovered the Constellation Aries?
While facts about the constellation Aries are well known, its discoverer is still a mystery. Its existence was known to the Greeks. The Egyptians, Babylonians and other ancient civilizations were aware of its existence too. Facts and Figures The constellation’s symbol is the ram and has an area of 441 sq degrees. It has four stars with planets. There are two bright stars and two nearby. There are six meteor showers (the May, Autumn, Delta, Epsilon, Daytime Arietids, and the Aries Triangulids). The constellations in the vicinity are Taurus, Perseus, Pisces, Cetus and Triangulum. A study of the facts about the constellation Aries show the best time to view it is at + 90 degrees and – 60 degrees on 9:00 PM in December. Noteworthy Stars Alpha Arietis (Hamal) has a magnitude of 2, the brightest star in Aries. It has a reddish hue. It is 5 times bigger than the Sun and 55 times brighter. Beta Arietis has a magnitude of 2.7 and more than 60 light years away. The Gamma Arietis is a double...

Who Discovered the Slope Formula?

Who Discovered the Slope Formula?
The slope formula determines the position of a line with respect to its “x” and “y” coordinates. This mathematical calculation is the concern of Analytical Geometry which solves linear and geometric problem with the aid of Algebra. Thus, to the question who discovered the slope formula, it is necessary to look into who started Analytic Geometry. Rene Descartes 1596 Rene or Renee Decartes is the father of Analytical Geometry. He was a French mathematician, physicist, philosopher, and theologian. Many mathematics experts acknowledge him as the man who discovered the slope formula. He was said to have provided a method to solve the problem of lines and slopes in mathematics by his prowess in Algebra and Geometry. The basic slope formula is y=mx+b while the more complex point-slope formula is y-yl=m(x-x1). Because Descartes is the father of Analytical Geometry and this subject centers mostly on lines and slopes, he was the first to introduce solutions to slopes and linear problems....