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23 Topic Pages Found in Physics and starting with the letter B
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Open Ballistics

( bӘlĭs'tĭks ), science of projectiles. Interior ballistics deals with the propulsion and the motion of a projectile within a gun or firing device.

Open Bardeen, John
Bardeen, John

Place : United States of America Subject : biography, physics US physicist whose work on semiconductors, together with William Shockley (1910-1989)

Open Barkla, C. G. (Charles Glover), 1877-1944
Barkla, C. G. (Charles Glover), 1877-1944

English physicist who studied the phenomenon of secondary radiation (the effect whereby a substance subjected to X-rays re-emits secondary

Open Barometers

( bӘrŏm'ӘtӘr ), instrument for measuring atmospheric pressure. It was invented in 1643 by the Italian scientist Evangelista Torricelli, who used a

Open Batteries

Any chemical energy-storage device allowing release of electricity on demand. It is made up of one or more electrical cells . Electricity is produced


small optical instrument consisting of two similar telescopes mounted on a single frame so that separate images enter each of the viewer's eyes. As

Open Biomass energy
Biomass energy

Any solid, liquid, or gaseous fuel produced from organic (once living) matter, either directly from plants or indirectly from industrial, commercial,

Open Black holes (Astronomy)
Black holes (Astronomy)

in astronomy, celestial object of such extremely intense gravity that it attracts everything near it and in some instances prevents everything,

Open Boas, Franz, 1858-1942
Boas, Franz, 1858-1942

( bō'ăz, –ăs ), 1858–1942, German-American anthropologist, b. Minden, Germany; Ph.D. Univ. of Kiel, 1881. He joined an expedition to Baffin Island in

Bohm, David, 1917-1992

The American theoretical physicist David Böhm is widely regarded as one of the 20th century's most original thinkers. Over the course of a