quill-type bearing
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bearing — [1] The area of a unit in which the contacting surface of a revolving part rests in order to minimize wear and friction between two surfaces. [2] An antifriction reducing device that is usually found between two moving parts. The babbitt bearings … Dictionary of automotive terms
needle bearing — A roller type bearing in which the many rollers have a very narrow diameter in relation to their length. The design makes them particularly useful in situations where there is limited space such as the rod bearings on some pistons. Also called… … Dictionary of automotive terms
Bicycle pedal — A bicycle pedal is the part of a bicycle that the rider pushes with their foot to propel the bicycle. It provides the connection between the cyclist s foot or shoe and the crank allowing the leg to turn the bottom bracket spindle and propel the… … Wikipedia
WRITING — (Scripts, Materials, and Inscriptions). SCRIPTS AND MATERIALS General Survey From the end of the third millennium B.C.E., the art of writing was practiced in the ancient Near East (see alphabet ). Here, the pictographic, cuneiform, and… … Encyclopedia of Judaism
Velociraptor — This article is about the dinosaur. For the Kasabian album, see Velociraptor!. For other uses, see Raptor (disambiguation). Vertebrata Velociraptor Temporal range: Late Cretaceous, 75–71 Ma … Wikipedia
List of Greyhawk deities — This is a list of deities from the Greyhawk campaign setting for the Dungeons Dragons fantasy role playing game. See also: List of Greyhawk characters Contents: Top · 0–9 · A B C D E F G H I J K L M N O P … Wikipedia
calligraphy — calligrapher, calligraphist, n. calligraphic /kal i graf ik/, calligraphical, adj. calligraphically, adv. /keuh lig reuh fee/, n. 1. fancy penmanship, esp. highly decorative handwriting, as with a great many flourishes: She appreciated the… … Universalium
ALPHABET, HEBREW — The origin of alphabetic script has always been a subject of human curiosity. According to Greek mythology, script was brought to Greece from Phoenicia. This tradition was accepted by the Greek and Roman writers, some of whom developed it even… … Encyclopedia of Judaism
Life Sciences — ▪ 2009 Introduction Zoology In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… … Universalium
Feathered dinosaur — Artist s impression of Anchiornis, illustrating feather arrangement and colors The realization that dinosaurs are closely related to birds raised the obvious possibility of feathered dinosaurs. Fossils of Archaeopteryx include well preserved… … Wikipedia
