Henri Poincare

Henri Poincare was born on April 29, 1854 in Nancy, France and died on July 17, 1912. He remained in the history as a great mathematician, theoretical physicist and a philosopher of...

Henri Coanda

Henry Coanda was born on June 7, 1886 in Bucharest, Romania. He was a Romanian academician and engineer, aviation pioneer and the inventor of the modern jet aircraft. Biography and...

Harrison Schmitt

Harrison Schmitt (Harrison Hagan "Jack" Schmitt) was born on July 3, 1935 in Santa Rita, New Mexico and he is a famous geologist, astronaut and a one-term U.S. Senator. He is famous...

Hermann von Helmholtz

Hermann Ludwig Ferdinand von Helmholtz (1821-1894) was a German physiologist, physicist, and inventor of the ophthalmoscope for examining the inside of the eye. Short Biography...

Hans Geiger

Johannes Wilhelm Geiger (1882-1945) was a German physicist who produced the Geiger counter. Short Biography: After studying in Germany, he spent the period 1907-1912 in Manchester...

Henry Cavendish

Henry Cavendish (1731-1810) was a British physicist. Why is Henry Cavendish famous? He discovered hydrogen, which he called 'inflammable air' in 1766, and determined the compositions...

Howard Florey

Howard Walter Florey, Baron Florey (1898-1968) was a Australian pathologist whose research into lysozyme, an antibacterial enzyme discovered by Fleming, led him to study penicillin...

Hendrik Lorentz

Hendrik Antoon Lorentz (1853-1928) was a Dutch physicist, winner (with his pupil Pieter Zeeman) of the Nobel physics prize in 1902 for his work on the Zeeman effect. Short Biography...

Harold Varmus

Harold Varmus was born on December 18, 1939 in USA. He is a famous scientist. He also worked as Director of "National Institutes of Health" for seven years. In 1989 he got a Nobel...

Harlow Shapley

Harlow Shapley (1885-1972) was an American astronomer, whose study of globular star clusters showed that they were arranged in a halo around the galaxy, and that the galaxy was much...

Herman Hollerith

Herman Hollerith (1860-1929) was an American inventor of a mechanical tabulating machine, the first device for data processing. Short Biography: Hollerith's tabulator was widely...

Humphry Davy

Humphry Davy (1778-1829) was a English chemist. Short Biography: As a laboratory assistant in Bristol in 1799, he discovered the respiratory effects of laughing gas (nitrous...

Heike Kamerlingh Onnes

Kamerlingh Onnes (1853-1926) was a Dutch physicist, who worked mainly in the field of low temperature physics, and in 1911 discovered the phenomenon of superconductivity (enhanced electrical...

Hippocrates

Hippocrates (c. 460 - c. 370 BC) was a Greek physician, often called the founder of medicine. Important Hippocratic ideas include cleanliness (for patients and physicians), moderation...

Henri Moissan

Henri Moissan (1852-1907) preparation of pure fluorine in 1886, Moissan was awarded the 1906 Nobel Prize for Chemistry. Short Biography: He also attempted to create artificial...

Heinrich Olbers

Heinrich Olbers (1758-1840) was a German doctor and astronomer. Short Biography: He discovered two of the first asteroids to be found, Pallas in 1802 and Vesta in 1807, as well...

Hermann Bondi

Hermann Bondi (1919-2005) was a British cosmologist, born in Austria. Short Biography: In 1948 he joined with Fred Hoyle and Thomas Gold in developing the steady-state theory...

Hieronymus Fabricius

Hieronymus Fabricius (1537-1619) was a Italian anatomist and embryologist. Short Biography: He made a detailed study of the veins, and discovered the valves which direct the...

Howard Aiken

Howard Aiken (full name Howard Hathaway Aiken) was born on March 8, 1900 in Hoboken, New Jersey, USA and died on March 14, 1973 in St. Louis, Missouri, USA at age 73. Short Biography...

Henrik Dam

Carl Peter Henrik Dam (February 21, 1895 – April 17, 1976) was a Danish biochemist who discovered vitamin K. Short Biography: For his success in this field he shared the 1943...

Harold Urey

Harold Clayton Urey (1893-1981) in 1932 be isolated heavy water (which contains deuterium, an isotope of hydrogen, rather than ordinary hydrogen), and thus discovered deuterium. He...

Hans Albrecht Bethe

Hans Albrecht Bethe (1906-2005) was a German-born American physicist. Short Biography: He worked on the first atomic bornb, and was in 1967 awarded a Nobel prize for his discoveries...