model, television hostBorn: 9/9/1969Birthplace: New Zealand Rachel Hunter turned to modeling at the age of 17. She was soon seen regularly on the covers of fashion magazines, such as Vogue, and…
(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…
(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…
(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) Young's modulus [for Thomas Young], number representing (in pounds per square inch or dynes per square centimeter) the ratio of stress to strain for a wire or bar of a given substance…
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.…
