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Hazel Bishop and the Long Lasting Lipstick

Hazel Bishop and the Long Lasting Lipstick

On August 17, 1906, US-American chemist Hazel Gladys Bishop was born. She is best known as the inventor of the first long lasting lipstick in 1949, an invention on which she founded a successful cosmetic company. Hazel Gladys Bishop – A Career in Bio-Chemistry Hazel Gladys Bishop graduated in 1929, earning a degree in chemistry. It is assumed that originally, Bishop intended to become a doctor, but instead left medical school and started…
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Isaac Singer and the Perfection of the Sewing Machine

Isaac Singer and the Perfection of the Sewing Machine

On July 23, 1875, American inventor, actor, and entrepreneur Isaac Merrit Singer passed away. He made important improvements in the design of the sewing machine and was the founder of the Singer Sewing Machine Company. Isaac Singer – Early Years of an Engineer Isaac Singer was born in 1811 in Pittstown, New York, as the eighth child of the millwright Adam Reisinger. As he himself said in an interview in 1853, his parents…
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Murray Gell-Mann and the Quark Model

Murray Gell-Mann and the Quark Model

On September 15, 1929, American physicist and Nobel Laureate Murray Gell-Mann was born. He is best known for his work on the theory of elementary particles and introduced the quark model. The quark model is a classification scheme for hadrons, i.e. composite particle made of quarks held together by the strong force (in the same way as atoms and molecules are held together by the electromagnetic force). “While many questions about quantum mechanics…
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