Johann Gottfried Galle was a German astronomer at the Berlin Observatory who, with the assistance of student Heinrich Louis d'Arrest, was the first person to view the planet Neptune, and know what he was looking at, on 23 September, 1846. H...

Antoine-Joseph (known as Adolphe) Sax was a Belgian musical instrument designer, best known for inventing the saxophone. Having left school, Sax began to experiment with new instrument designs. In 1841, Sax relocated permanently to Paris an...

Joseph Arthur Comte de Gobineau was a French aristocrat, novelist and man of letters who became famous for developing the racialist theory of the Aryan master race in his book An Essay on the Inequality of the Human Races (1853–1855). De Go...

James Prescott Joule was an English physicist and brewer, born in Salford, Lancashire. Joule studied the nature of heat, and discovered its relationship to mechanical work. This led to the law of conservation of energy, which led to the dev...

Cyrus West Field was an American businessman and financier who led the Atlantic Telegraph Company, the company that successfully laid the first telegraph cable across the Atlantic Ocean in 1858. The cable broke down three weeks afterwar...

Gregor Johann Mendel was a Austrian priest and scientist, and is often called the father of genetics for his study of the inheritance of traits in pea plants. Mendel showed that the inheritance of traits follows particular laws, which were...

Louis Pasteur was a French biologist, microbiologist and chemist renowned for his discoveries of the principles of vaccination, microbial fermentation and pasteurization. He is remembered for his remarkable breakthroughs in the causes and p...

Jean Joseph Étienne Lenoir was a Belgian engineer who developed the internal combustion engine in 1859. Prior designs for such engines were patented as early as 1807, but none were commercially successful. Lenoir's engine was commercialized...

John Hanning Speke was an officer in the British Indian Army who made three exploratory expeditions to Africa and who is most associated with the search for the source of the Nile. In 1844 he was commissioned into the British army and p...

Saigo Takamori was one of the most influential samurai in Japanese history, living during the late Edo Period and early Meiji Era. He has been dubbed the last true samurai. He was born Saigo Kokichi, and received the given name Takamori in...

Eadweard Muybridge is often called the father of the motion picture because of his photographic studies of animal motion. He began his career as a landscape photographer, and always considered himself more an artist than a scientist, altho...

Eduard Suess was a geologist who was an expert on the geography of the Alps. He is responsible for discovering two of the Earth's major now-lost geographical features, the supercontinent Gondwana (proposed 1861) and the Tethys Ocean. Sue...

Alfred Bernhard Nobel was a Swedish chemist, engineer, inventor, businessman, and philanthropist. Known for inventing dynamite, Nobel also owned Bofors, which he had redirected from its previous role as primarily an iron and steel produc...

Dimitri Mendeleev, was a Russian chemist. He is credited as being the primary creator of the first version of the periodic table of elements. Unlike other contributors to the table, Mendeleev predicted the properties of elements yet to be d...

Robert Heinrich Hermann Koch was a German physician and microbiologist. As the founder of modern bacteriology, he identified the specific causative agents of tuberculosis, cholera, and anthrax and gave experimental support for the concept o...