Columbia Encyclopedia
Search results
82 results found
shipwreck
(Encyclopedia)shipwreck, complete or partial destruction of a vessel as a result of collision, fire, grounding, storm, explosion, or other mishap. In the ancient world sea travel was hazardous, but in modern times ...Vardø
(Encyclopedia)Vardø värˈdö [key], town (1995 pop. 3,016), Finnmark co., extreme NE Norway, on the island of Vardøya in the Arctic Ocean, near the entrance to the Varangerfjord. It is an ice-free port; fishing ...microwave
(Encyclopedia)microwave, electromagnetic wave having a frequency range from 1,000 megahertz (MHz) to 300,000 MHz, corresponding to a wavelength range from 300 mm (about 12 in.) to 1 mm (about 0.04 in.). Like light ...Engelbart, Douglas Carl
(Encyclopedia)Engelbart, Douglas Carl, 1925–2013, American engineer and inventor, b. Portland, Oreg., Ph.D Univ. of California, Berkeley, 1955. He was a radar technician in the navy during World War II and an ele...weather balloon
(Encyclopedia)weather balloon, balloon used in the measurement and evaluation of mostly upper atmospheric conditions (see atmosphere). Information may be gathered during the vertical ascent of the balloon through t...McMillan, Edwin Mattison
(Encyclopedia)McMillan, Edwin Mattison, 1907–91, American physicist, b. Redondo Beach, Calif., grad. California Institute of Technology, 1928, Ph.D. Princeton, 1932. On the faculty of the Univ. of California from...Hounsfield, Sir Godfrey Newbold
(Encyclopedia)Hounsfield, Sir Godfrey Newbold, 1919–2004, British electrical engineer. A radar expert for the Royal Air Force during World War II, in the 1950s Hounsfield began developing computer and X-ray techn...waveguide
(Encyclopedia)waveguide, device that controls the propagation of an electromagnetic wave so that the wave is forced to follow a path defined by the physical structure of the guide. Waveguides, which are useful chie...Jodrell Bank Observatory
(Encyclopedia)Jodrell Bank Observatory jôdˈrəl [key], observatory for radio astronomy located at Jodrell Bank, Macclesfield, England. Founded in 1945 on the site of a botanical experiment station, it is administ...radiosonde
(Encyclopedia)radiosonde rāˈdēōsŏnd [key], group of instruments for simultaneous measurement and radio transmission of meteorological data, including temperature, pressure, and humidity of the atmosphere. The ...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 +-
