Ball
A ball is a round object (usually spherical, but can sometimes be ovoid) with several uses. It is used in ball games, where the play of the game follows the state of the ball as it is hit, kicked or thrown by players. Balls can also be used for simpler activities, such as catch or juggling. Balls made from hard-wearing materials are used in engineering applications to provide very low friction bearings, known as ball bearings. Black-powder weapons use stone and metal balls as projectiles.Although many types of balls are today made from rubber, this form was unknown outside the Americas until after the voyages of Columbus. The Spanish were the first Europeans to see the bouncing rubber balls (although solid and not inflated) which were employed most notably in the Mesoamerican ballgame. Balls used in various sports in other parts of the world prior to Columbus were made from other materials such as animal bladders or skins, stuffed with various materials.
As balls are one of the most familiar spherical objects to humans, the word "ball" may refer to or describe spherical or near-spherical objects.
"Ball" is used metaphorically sometimes to denote something spherical or spheroid, e.g., armadillos and human beings curl up into a ball, making a fist into a ball. Provided by Wikipedia
161
162
163
Published 1999
Other Authors:
“...Ball, A S....”
Conference Proceeding
Book Chapter
164
Published 2004
Other Authors:
“...Ball, Arnetha F., 1950-...”
Book
165
166
by Gannon, Todd.
Published 2005
Other Authors:
“...Ball, Teresa....”Published 2005
Table of contents
Publisher description
Contributor biographical information
Book
167
168
169
170
171
Published 1979
Other Authors:
“...Ball, George E....”
Conference Proceeding
Book
172
Published 2012
Other Authors:
“...Ball, V. Eldon....”
Book
173
174
Published 2010
Other Authors:
“...Ball, Stephen J....”
Book
175
Published 2018
Other Authors:
“...Ball, Linden J., 1963-...”
Book
176
177
178
179
Published 2001
Other Authors:
“...Ball, B. C....”
Book
180