The book is a chronology of the development of the theory of Relativity. Starting with Lorentz' papers on Michelson's interference experiment and electomagnetic phenomena in moving frames of reference, the book follows the rapid development...

In physics, mass–energy equivalence is a concept formulated by Albert Einstein that explains the relationship between mass and energy. It expresses the law of equivalence of energy and mass using the formula E = mc2 where E is the ene...

The Revolution of 1905 was a wave of mass political and social unrest that spread through vast areas of the Russian Empire. Some of it was directed against the government, while some was undirected. It included worker strikes, peasant unres...

Viktor Emil Frankl was an Austrian neurologist and psychiatrist as well as a Holocaust survivor. Frankl was the founder of logotherapy, which is a form of Existential Analysis, the "Third Viennese School of Psychotherapy". His best-selling...

Thomas "Tommy" Harold Flowers was an English engineer. During World War II, Flowers designed Colossus, the world's first programmable electronic computer, to help solve encrypted German messages. Flowers's first contact with the wartime...

The Wright Flyer (often retrospectively referred to as Flyer I or 1903 Flyer) was the first successful heavier-than-air powered aircraft, designed and built by the Wright brothers. They flew it four times on December 17, 1903, near Kill Dev...

Werner Karl Heisenberg was a German theoretical physicist and one of the key creators of quantum mechanics. He published his work in 1925 in a breakthrough paper. In the subsequent series of papers with Max Born and Pascual Jordan, during t...

The Philippine-American War was an armed conflict between the First Philippine Republic and the United States that lasted from February 4, 1899 to July 2, 1902. The war was a continuation of the Filipino struggle for independence that began...

The Spanish-American War was a military conflict between Spain and the United States that began in April 1898. Hostilities halted in August of that year, and the Treaty of Paris was signed in December. The war began after the American de...

Greece was the birthplace of the ancient Olympic Games. The first modern Olympic Games were held in Athens in 1896. The International Olympic Committee was founded on 23 June 1894 by the French educator Baron Pierre de Coubertin who was ins...

The Philippine Revolution, also called the Tagalog War by the Spanish, was a revolution and subsequent conflict fought between the people and insurgents of the Philippines and the Kingdom of Spain with its Spanish Empire and Spanish colonia...

The Klondike Gold Rush was a migration by an estimated 100,000 prospectors to the Klondike region of the Yukon in north-western Canada between 1896 and 1899. Gold was discovered there by local miners on August 16, 1896 and, when news reache...

The Cuban War of Independence was the last of three liberation wars that Cuba fought against Spain, the other two being the Ten Years' War (1868–1878) and the Little War (1879–1880). The final three months of the conflict escalated to becom...

Grace Marguerite, Lady Hay Drummond-Hay was a British journalist who was the first woman to travel around the world by air, in a Zeppelin. Although she was not an aviator herself at first, she certainly contributed to its glamour and the ge...

Georges Lemaître was a Belgian Roman Catholic priest, honorary prelate, professor of physics and astronomer at the Catholic University of Leuven. He sometimes used the title Abbé or Monseigneur. Lemaître proposed what became known as the Bi...