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Tabea Tietz

botany
Johann Gottlieb Kölreuter and the Study of Plant Fertilization

Johann Gottlieb Kölreuter and the Study of Plant Fertilization

Tabea Tietz
On April 27, 1733, German botanist Joseph Gottlieb Kölreuter was born. Kölreuter was a German botanist who pioneered the study of plant fertilization, hybridization and was the first to detect self-incompatibility. He was an observer as well as a rigorous experimenter who used careful crossing experiments although he did not inquire into the nature of heritability. Joseph Gottlieb Kölreuter – Early Years Joseph Gottlieb Kölreuter was the son of an apothecary in…
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philosophy
Garrett Hardin and the Tragedy of the Commons

Garrett Hardin and the Tragedy of the Commons

Tabea Tietz
On April 21, 1915, American ecologist and philosopher Garrett James Hardin was born. Hardin warned of the dangers of overpopulation. His exposition of the tragedy of the commons, in a famous 1968 paper in Science, called attention to “the damage that innocent actions by individuals can inflict on the environment“. He is also known for Hardin’s First Law of Human Ecology: “We can never do merely one thing. Any intrusion into nature…
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biology
Christian Gottfried Ehrenberg – Father of Micropaleontology

Christian Gottfried Ehrenberg – Father of Micropaleontology

Tabea Tietz
On April 19, 1795, German naturalist, zoologist, comparative anatomist, geologist, and microscopist Christian Gottfried Ehrenberg was born. Ehrenberg was one of the most famous and productive scientists of his time. He has been called the founder of micropaleontology (the study of fossil microorganisms). He held that animals, of any size down to the tiniest, have organ systems in common, including muscles, reproductive organs, and stomachs. Christian Gottfried Ehrenberg – Early Years Christian Gottfried Ehrenberg…
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archeology
Édouard Lartet – a pioneer of Paleolithic archaeology

Édouard Lartet – a pioneer of Paleolithic archaeology

Tabea Tietz
On April 15, 1801, French geologist and paleontologist Édouard Lartet was born. Lartet was a pioneer of Paleolithic archaeology, who is chiefly credited with discovering man’s earliest art and with establishing a date for the Upper Paleolithic Period of the Stone Age. His most striking discovery was a mammoth tooth, found in a cave, upon which was a drawing of a mammoth. This was clear proof that man lived at the same time as…
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astronomy
Donald Howard Menzel and the UFOs

Donald Howard Menzel and the UFOs

Tabea Tietz
On April 11, 1901, theoretical astronomer and astrophysicist Donald Howard Menzel was born. Menzel discovered the physical properties of the solar chromosphere, the chemistry of stars, the atmosphere of Mars, and the nature of gaseous nebulae. Moreover, he was best known for his arguments against the existence of extraterrestrial UFOs. Early Years Donald Howard Menzel already collected rocks as a child and built a chemistry laboratory in the cellar of his family’s…
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engineering
John Leslie’s Research in Heat and Capillary Action

John Leslie’s Research in Heat and Capillary Action

Tabea Tietz
On April 10, 1766, Scottish mathematician and physicist Sir John Leslie was born. Leslie is best remembered for his research into heat. He gave the first modern account of capillary action in 1802 and froze water using an air-pump in 1810, the first artificial production of ice. “The true business of the philosopher, though not flattering to his vanity, is merely to ascertain, arrange and condense the facts. “ — Sir John…
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anthropology
Bronisław Malinowski – the Founder of Social Anthropology

Bronisław Malinowski – the Founder of Social Anthropology

Tabea Tietz
On April 7, 1884, Polish anthropologist Bronisław Kasper Malinowski was born. Malinowski is widely recognized as the founder of social anthropology and often considered one of the most important 20th-century anthropologists. Early Years Bronisław Malinowski was the son of the Krakow linguist Lucjan Malinowski. When he was thirteen years old, his father died. In his youth he received strong influences from Ernst Mach,[6] a philosopher oriented towards natural science, and from linguistics. Malinowski earned…
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medical science
John Hughlings Jackson and his studies of Epilepsy

John Hughlings Jackson and his studies of Epilepsy

Tabea Tietz
On April 4, 1835, English neurologist John Hughlings Jackson was born. Jackson is best known for his research on epilepsy. His studies of epilepsy, speech defects, and nervous-system disorders arising from injury to the brain and spinal cord remain among the most useful and highly documented in the field. He was one of the first to state that abnormal mental states may result from structural brain damage. John Hughlings Jackson – Early Years John…
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biology
Katherine Esau and the Anatomy of Plants

Katherine Esau and the Anatomy of Plants

Tabea Tietz
On April 3, 1898, German-American botanist Katherine Esau was born. Esau did groundbreaking work in the structure and workings of plants. She is best known for her research into the effects of viruses upon plant tissues, and her studies of plant tissue structures and physiology. “I found ways of maintaining spiritual independence while adjusting myself to established policies. . . . I have never felt that my career was being affected by the…
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chemistry
Peter Debye – Dipole Moments, X Rays, and Light Scattering

Peter Debye – Dipole Moments, X Rays, and Light Scattering

Tabea Tietz
On March 24, 1884, Dutch-American physicist and physical chemist Peter Joseph William Debye was born. Debye’s investigations of dipole moments, X rays, and light scattering in gases brought him the 1936 Nobel Prize in Chemistry. Most of his work was in chemical-physics with special interest in electrolytes and dipolar momentum analysis. He established a theory of specific heat with some improvements on that proposed by Einstein.[5] “If a problem is clearly stated,…
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