(Encyclopedia) Leyden jarLeyden jarlīˈdən [key], form of capacitor invented at the Univ. of Leiden in the 18th cent. It consists of a narrow-necked glass jar coated over part of its inner and outer…
(70 meters)Men Individual: 1. Justin Huish, USA def., 2. Magnus Petersson, SWE (112-107); 3. Oh Kyo-moon, S.KOR def. Paul Vermeiren, BEL (115-110). Team: 1. United States (Justin Huish, Richard…
inventor, manufacturer, reformerBorn: 8/3/1846Birthplace: Carnarvonshire, Wales Jones began working in the oil fields of Ohio and Pennsylvania when he was only 10 years old, and gained enough…
(Encyclopedia) night blindness, inability to see normally in subdued light. It is usually a result of vitamin A deficiency. The rod cells, one of two light-sensitive areas of the retina of the eye,…
(Encyclopedia) Pomo, Native Americans of N California, belonging to the Hokan branch of the Hokan-Siouan linguistic stock (see Native American languages). The Pomo were the most southerly Native…
WHAT IS THE PUPIL? HOW THE EYE FOCUSESWHY DO WE HAVE TWO EYES? HOW DO WE SEE IN COLOR? FIND OUT MOREOur eyes create our sense of vision. They take in light rays, focus them to create an image, and…
WHAT ARE FUSION AND FISSION? HOW IS A NUCLEAR REACTION CONTROLLED? RADIOACTIVITYFIND OUT MOREThe energy that makes the stars shine and produces the heat inside a nuclear reactor is nuclear energy.…
(Encyclopedia) eccentric, in mechanics, device for changing rotary to back-and-forth motion. A disk is mounted off center on a shaft. One flat, open, circular end of a rod fits around the edge of the…
BEACH, Clifton Bailey, a Representative from Ohio; born in Sharon, Medina County, Ohio, September 16, 1845; moved to Cleveland with his parents in 1857; attended the common schools and was…
