(Encyclopedia) barograph, instrument used to make a continuous recording of atmospheric pressure. The pressure-sensitive element, a partially evacuated metal cylinder, is linked to a pen arm in such…
(Encyclopedia) SkagerrakSkagerrakskăˈgərăk [key], strait, c.150 mi (240 km) long and 85 mi (140 km) wide, between Norway and Denmark, linking the North Sea and the Baltic Sea by way of the Kattegat.…
(Encyclopedia) Copernican system, first modern European theory of planetary motion that was heliocentric, i.e., that placed the sun motionless at the center of the solar system with all the planets,…
(Encyclopedia) Local Group, in astronomy, loose cluster of at least 40 nearby galaxies, including our own Milky Way galaxy, the Andromeda Galaxy, and the Magellanic Clouds. The Local Group is spread…
(Encyclopedia) Butler, Samuel, 1835–1902, English author. He was the son and grandson of eminent clergymen. In 1859, refusing to be ordained, he went to New Zealand, where he established a sheep farm…
(Encyclopedia) wig, arrangement of artificial or human hair worn to conceal baldness, as a disguise, or as part of a costume, either theatrical, ceremonial, or fashionable. In ancient Egypt the wig…
(Encyclopedia) Broadway, famous thoroughfare in New York City. It extends from Bowling Green near the foot of Manhattan island N to 262d St. in the Bronx. Throughout its length Broadway is chiefly a…
(Encyclopedia) lock and key, fastening fitted to an entryway, such as a gate or door, or a container, such as a cabinet, drawer or safe, to keep it closed and/or prevent unauthorized access or use.…
1929—1968, American clergyman and civil rights leader
Dr. Martin Luther King, Jr., prepares to speak to a crowd of 200,000 marchers in Washingtion, DC. Related Links Martin Luther King…
UNDERWATER EYEHOME HELPINDUSTRIAL ARMHUMANOID ROBOTSFIND OUT MORERobots are machines that behave a bit like people, and can perform difficult or repetitive tasks. HUMANOID ROBOTS even look like…
