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Frederick William Twort and the Bacteriophages

Frederick William Twort and the Bacteriophages

Tabea Tietz
On March 20, 1955, English bacteriologist Frederick William Twort passed away. Twort was the original discoverer in 1915 of bacteriophages, i.e. viruses that infect bacteria. He researched into Johne’s disease, a chronic intestinal infection of cattle, and also discovered that vitamin K is needed by growing leprosy bacteria. Early Years Frederick William Twort was born in Camberley, Surrey, the eldest of the eleven children of Dr. William Henry Twort. He initially only received a limited…
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chemistry
Edward C. Kendall and the Adrenal Cortex Hormones

Edward C. Kendall and the Adrenal Cortex Hormones

Harald Sack
On March 8, 1886, American chemist and Nobel laureate Edward Calvin Kendall was born. Kendall shared the Nobel Prize for Physiology or Medicine in 1950 with Philip S. Hench and Tadeus Reichstein for research on the structure and biological effects of adrenal cortex hormones. Kendall did not only focus on the adrenal glands, he was also responsible for the isolation of thyroxine, a hormone of the thyroid gland and worked with the…
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chemistry
Hans von Euler-Chelpin and the Alcoholic Fermentation of Sugar

Hans von Euler-Chelpin and the Alcoholic Fermentation of Sugar

Tabea Tietz
On February 15, 1873, German-born Swedish biochemist Hans von Euler-Chelpin was born. Hans von Euler-Chelpin shared the 1929 Nobel Prize for Chemistry with Sir Arthur Harden for work on the role of enzymes in the alcoholic fermentation of sugar. Youth and Education Hans von Euler-Chelpin was the son of the later Bavarian Major General Rigas von Euler-Chelpin (1837-1923)and his wife Gabriele Furtner († 1931). He spent most of his childhood with his grandmother in…
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chemistry
Alexandre-Émile Béguyer de Chancourtois and the Order of the Chemical Elements

Alexandre-Émile Béguyer de Chancourtois and the Order of the Chemical Elements

Tabea Tietz
On January 20, 1820, French geologist and mineralogist  Alexandre-Émile Béguyer de Chancourtois was born. De Chancourtois was the first to arrange the chemical elements in order of atomic weights in 1862. De Chancourtois only published his paper, but did not publish his actual graph with the irregular arrangement. Although his publication was significant, it was ignored by chemists as it was written in terms of geology. It was Dmitri Mendeleev’s table published in 1869…
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chemistry
Paul Müller and the Doubtful Qualities of DDT

Paul Müller and the Doubtful Qualities of DDT

Tabea Tietz
On January 12, 1899, Swiss chemist and Nobel Laureate Paul Hermann Müller was born. Müller received the 1948 Nobel Prize in Physiology or Medicine for his 1939 discovery of insecticidal qualities and use of DDT in the control of vector diseases such as malaria and yellow fever. “We have discovered many preventives against tropical diseases, and often against the onslaught of insects of all kinds, from lice to mosquitoes and back again. The excellent…
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chemistry
Robert Boyle – The Sceptical Chemist

Robert Boyle – The Sceptical Chemist

Harald Sack
On December 31, 1691, Anglo-Irish natural philosopher, chemist, physicist and inventor Robert Boyle passed away. Boyle is largely regarded today as the first modern chemist, and therefore one of the founders of modern chemistry, and one of the pioneers of modern experimental scientific method. He is best known for Boyle’s law, which describes the inversely proportional relationship between the absolute pressure and volume of a gas, if the temperature is kept constant…
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chemistry
Willard Frank Libby and the Radiocarbon Dating

Willard Frank Libby and the Radiocarbon Dating

Harald Sack
On December 17, 1908, American physical chemist Willard Frank Libby was born. Libby is best known for his role in the 1949 development of radiocarbon dating, a process which revolutionized archaeology and palaeontology. For his contributions to the team that developed this process, Libby was awarded the Nobel Prize in Chemistry in 1960. Early Years Willard Frank Libby was born among two siblings in Grand Valley, Colorado, the son of farmers Ora…
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medical science
Max von Pettenkofer – the Apostle of Good Water

Max von Pettenkofer – the Apostle of Good Water

Tabea Tietz
On December 3, 1818, Bavarian chemist and hygienist Max Joseph von Pettenkofer was born. In his early career worked on industrial chemical processes and analysis of urine and bile acids, but today he is remembered in connection with his work in practical hygiene, as an apostle of good water, fresh air and proper sewage disposal. He also developed standards for adequate ventilation in schools and hospitals. “From time to time we send our underwear to…
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chemistry
Charles-Adolphe Wurtz and the Atomic Theory

Charles-Adolphe Wurtz and the Atomic Theory

Harald Sack
On November 26, 1817, Alsatian French chemist and educator Charles-Adolphe Wurtz was born. Wurtz is best remembered for his decades-long advocacy for the atomic theory and for ideas about the structures of chemical compounds, against the skeptical opinions of chemists such as Marcellin Berthelot and Etienne Henri Sainte-Claire Deville. He is well known by organic chemists for the Wurtz reaction, to form carbon-carbon bonds by reacting alkyl halides with sodium, and for…
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chemistry
Nathaniel Wyeth and the Invention of the PET Bottle

Nathaniel Wyeth and the Invention of the PET Bottle

Tabea Tietz
On October 24, 1911, American mechanical engineer and inventor Nathaniel C. Wyeth was born. Wyeth is best known for creating polyethylene terephthalate that could withstand the pressure of carbonated liquids. Made of recyclable PET plastic, lighter than glass and virtually unbreakable, Wyeth’s invention is used widely today for both carbonated and non-carbonated drinks. Nathaniel Wyeth – Background Information Nathaniel C. Wyeth was born into America’s foremost family of artists: both of his sisters…
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