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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 Copper?

Who Discovered Copper?
Introduction Who discovered copper? Nobody knows. But evidence suggests that copper was the first metal ever discovered and used by man. Or at least one of the oldest. In modern day Iraq, archeologists once found a copper pendant over 10,000 years old. Unlike silver, copper is often found uncompounded in its natural state. So it is likely that humans learned to use copper first, perhaps along with gold and meteoritic iron. History of Copper Two of the world’s oldest civilizations made use of copper – Chaldea and Sumer. They used copper to make military equipment such as bows, arrows, spear heads and helmets. Archeologists have also unearthed small items like copper pins, harpoons blades and pots made of bronze (a copper alloy). Sumerian craftsmen made beautiful sculptures made from copper and mounted them on walls. The Imdugud Relief is a fine example of this. It dates from 3,100BC and shows an eagle with the head of a lion, holding a stag in each claw. Copper can be mixed with other...

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 Treacher Collins Syndrome?

Who Discovered Treacher Collins Syndrome?
Marked by craniofacial deformities, Treacher Collins syndrome is a rare genetic disorder. Some of its symptoms include conductive hearing loss, small lower jaw or micrognathia and downward slanting eyes. In addition, patients may also experience malformed ears, drooping lower eyelids as well as underdeveloped zygoma. In addition to its symptoms, causes, and treatments, there are other interesting things to know about this disease including who discovered Treacher Collins syndrome. The Discovery of Treacher Collins Syndrome Who discovered Treacher Collins syndrome? An English surgeon named Edward Treacher Collins discovered this medical condition in 1900. During that time, he was able to describe the essential traits of the disease. He was also an ophthalmologist. One of his widely recognized works was entitled “Researches into the Anatomy and Pathology of the Eye,” which was released in 1896. The prevalence of this condition is one in every 10,000 births. Additional Facts and Other...