Columbia Encyclopedia
Search results
500 results found
electrodynamics
(Encyclopedia)electrodynamics, study of phenomena associated with charged bodies in motion and varying electric and magnetic fields (see charge; electricity); since a moving charge produces a magnetic field, electr...elevator, in machinery
(Encyclopedia)elevator, in machinery, device for transporting people or goods from one level to another. The term is applied to the enclosed structures as well as the open platforms used to provide vertical transpo...Tesla, Nikola
(Encyclopedia)Tesla, Nikola tĕsˈlə [key], 1856–1943, American electrician and inventor, b. Croatia (then an Austrian province). An ethnic Serb, he immigrated to the United States in 1884, worked for a short pe...brake, in technology
(Encyclopedia) CE5 Shoe brake CE5 Disk brake brake, in technology, device to slow or stop the motion of a mechanism or vehicle. The vacuum brake system, or vacuum brake, depends upon the use of a vacuum to ...motor scooter
(Encyclopedia)motor scooter: see motorcycle.electricity
(Encyclopedia) CE5 Electrical and radio symbols electricity, class of phenomena arising from the existence of charge. The basic unit of charge is that on the proton or electron—the proton's charge is designate...magnetism
(Encyclopedia) CE5 Lines of induction around a single bar magnet and between opposite poles of different magnets magnetism, force of attraction or repulsion between various substances, especially those made of i...marine engine
(Encyclopedia)marine engine, machine for the propulsion of watercraft. The earliest marine power plants, reciprocating steam engines, were used almost exclusively until the early 1900s. In later ship construction t...automobile
(Encyclopedia) CE5 Automobile chassis CE5 Two views of a six-cylinder automobile engine automobile, self-propelled vehicle used for travel on land. The term is commonly applied to a four-wheeled vehicle desig...torque
(Encyclopedia)torque, in physics, that which tends to change the rate of rotation of a body; also called the moment of force. The torque produced by rotating parts of an electric motor or internal-combustion engine...Browse by Subject
- Earth and the Environment +-
- History +-
- Literature and the Arts +-
- Medicine +-
- People +-
- Philosophy and Religion +-
-
Places
+-
- Africa
- Asia
- Australia and Oceania
- Britain, Ireland, France, and the Low Countries
- Commonwealth of Independent States and the Baltic Nations
- Germany, Scandinavia, and Central Europe
- Latin America and the Caribbean
- Oceans, Continents, and Polar Regions
- Spain, Portugal, Italy, Greece, and the Balkans
- United States, Canada, and Greenland
- Plants and Animals +-
- Science and Technology +-
- Social Sciences and the Law +-
- Sports and Everyday Life +-
