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Who Discovered Zinc?

Who Discovered Zinc?
Zinc (also identified as spelter) is considered as one of the plentiful elements in the crust of the Earth. Some countries like the United States, Canada and Australia are fortunate to have abundant sources of the element. In order to produce the element, there are process that should be done such as roasting, froth floatation and extraction. This element has various applications in different industries including the wood industry. Before we proceed with the different uses of the metal, it is important to start with the history of zinc. Historical Background Who discovered zinc? According to records, German scientist Andreas Margraf discovered the element in 1746. Even if Margraf was recognized for the discovery of the element, many historians agree that the element was already used by ancient people. One of the evidences that the element was used in early societies is the prehistoric statuette that was recovered in Transylvania, which was made from 87.5 per cent zinc. Aside from this,...

Who Discovered the Element Lithium?

Who Discovered the Element Lithium?
Represented by the atomic number 3 and symbol Li in the periodic table, lithium is described as a silver-white and soft metal. It is one of the alkali metals, which is generally considered the lightest amongst the various kinds of metals. Likewise, it is also the least dense amongst the different solid elements. More than anything else, it is known for its important uses in the fields of medicine, electronics and general engineering. The Discovery of Lithium Who discovered the element lithium? In 1817, a Swedish chemist named Johan August Arfwedson became the very first person to discover this chemical element. The result came from his analysis of a petalite ore. Before that, a Brazilian scientist named Jose Bonifacio de Andrade e Silva discovered lithium aluminum silicate or petalite in 1800. This finding was instrumental, particularly in the discovery of lithium. Swedish chemist Jons Jakob Berzelius named it ‘lithos,’ which later on was standardized as lithium. Additional Facts and...

Who Discovered Gunpowder?

Who Discovered Gunpowder?
Who discovered gunpowder? Invention of Gunpowder Gunpowder is a mixture of potassium nitrate, sulfur and charcoal. It was discovered in ancient China, some say around 8th century AD. A familiar story narrates how charcoal, sulfur and saltpeter were inadvertently joined together in a Chinese cook’s kitchen. There the first fireworks / gunpowder explosion took place. Another theory states that the emperor Wu Di commissioned a team of alchemists in 156-87 BC to discover the elixir of life. Their findings are said to have been recorded by alchemist Wei Bo yang in an alchemical text called “Kinship of the Three”. Uses of the Black Powder It seems ironic that the quest for immortality and long life led to the discovery of a destructive modern weapon. Actually, gunpowder’s first use was as a medicine. Chinese physicians used the mixture of charcoal, saltpeter and sulfur to treat skin diseases and repel insects. Then people discovered the black powder could be used to make fireworks. They...

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 Mumps?

Who Discovered Mumps?
Also called epidemic parotitis, mumps is a common disease that affects numerous people all over the world. Even after the introduction of a special vaccine to help control this viral disease, it continues to inflict pain and discomfort to many individuals, specifically on those who are living in third world countries. In addition to the possible causes, symptoms as well as treatment for this condition, it is interesting to know more about its history including information on who discovered mumps. The Discovery of Mumps Who discovered mumps? Based on historical accounts, an American pathologist by the name of Ernest William Goodpasture was the one who discovered mumps virus in 1934. One of the major signs of this medical problem is the swelling of the salivary glands, which is accompanied by pain. Although the symptoms are not severe in children, it can lead to subfertility or infertility to men and teenage males. Aside from him, a certain C. Johnson is also credited for the discovery...