Columbia Encyclopedia

Search results

500 results found

Tamm, Igor Yevgenyevich

(Encyclopedia)Tamm, Igor Yevgenyevich, 1895–1971, Soviet physicist, Ph.D. Moscow State Univ., 1933. He was a researcher at the P. N. Lebedev Physical Institute in Moscow from 1934 until his death in 1971. Tamm an...

mass, in physics

(Encyclopedia)mass, in physics, the quantity of matter in a body regardless of its volume or of any forces acting on it. The term should not be confused with weight, which is the measure of the force of gravity (se...

Arabian horse

(Encyclopedia)Arabian horse, breed of light horse developed in Mesopotamia and N Africa, and probably the first true domesticated breed. Prized since earliest times for its superior beauty, spirit, speed, grace of ...

cruiser

(Encyclopedia)cruiser, large, fast, moderately armed warship, intermediate in type between the aircraft carrier and the destroyer. During World War II, battle cruisers operated as small battleships, combining in on...

Perrine, Charles Dillon

(Encyclopedia)Perrine, Charles Dillon pərīnˈ [key], 1867–1951, American astronomer, b. Steubenville, Ohio. He was on the staff of Lick Observatory (1893–1909) and was (1909–36) director of the Argentine Na...

transmutation of elements

(Encyclopedia)transmutation of elements, conversion of one chemical element into another. The expression has both historical and contemporary significance. The transmutation of certain metals into gold by means of ...

Benjamin of Tudela

(Encyclopedia)Benjamin of Tudela to͞odāˈlä [key], d.1173, rabbi considered the first European to approach the borders of China, b. Tudela, Spain. He traveled (1159–73) through Italy, Greece, Palestine, Persia...

Witelo of Silesia

(Encyclopedia)Witelo of Silesia or Vitelo, c.1230–75, Silesian physicist, philosopher, and theologian. He studied in Paris and Padua and spent time at the papal palace in Viterbo, Italy. His ten-volume work on op...

Appaloosa horse

(Encyclopedia)Appaloosa horse ăpˌəlo͞oˈsə [key], breed of light horse developed in the United States by the Nez Percé of Idaho from a horse that originated in Asia and was popular in Europe during the Middle...

Balla, Giacomo

(Encyclopedia)Balla, Giacomo, 1871–1958, Italian painter, one of the founders of futurism. He moved from Turin to Rome in his twenties and began painting in a realist style. He travelled (1900) to Paris, where he...