Search Results: Quantum field theory

The germ theory, which emerged in the late 19th century, demonstrated that microscopic germs caused most human infectious diseases. The germs involved included bacteria, viruses, fungi, protozoa, and prions. Louis Pasteur (1822-1895), a French...

The 'horse-rider theory' is a controversial proposal that Japan was conquered around the 4th or 5th century CE by a culture from northern Asia to whom the horse was especially important. Although archaeological evidence and genetics point...

A'Aru (The Field of Reeds) was the Egyptian afterlife, an idealized vision of one's life on earth (also known as Sekhet-A'Aru and translated as The Field of Rushes). Death was not the end of life but a transition to another part of one's...

The ancient Egyptians believed that life on earth was only one part of an eternal journey which ended, not in death, but in everlasting joy. When one's body failed, the soul did not die with it but continued on toward an afterlife where one...

On this clay tablet, the author has listed the titles of cuneiform omen collections drawn from celestial and terrestrial phenomena. Rather unusually, he explains that the validity of an individual omen depends on the particular month and...

This clay tablet narrates a geometric-algebraic theory of angles and triangles, similar to to the theory of Euclid of Alexandria, the father of geometry (lived c. 300 BCE). From Tell Harmal (ancient Shaduppum), Iraq. Old-Babylonian period...

This clay tablet narrates a geometric-algebraic theory of how to make a solution for a mathematical problem. The conclusion applies a theory very similar to the Pythagorean theorem. From Tell Tell al-Dhabba'i, Iraq. Old-Babylonian period...

German field marshal Fedor von Bock (1880-1945) in 1939. Bock commanded important victories in the invasion of Poland in 1939, the Fall of France, and Operation Barbarossa during the Second World War (1939-45). (German Federal Archives)

An oil painting dating to c. 1545 CE illustrating the 'Field of the Cloth of Gold', a magnificent pageant held near Calais in June 1520 CE as a show of friendship between Henry VIII of England (r. 1509-1547 CE) and Francis I of France (r...

Tobacco field in Pittsylvania County, Virginia.