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The Clapper is a sound-activated electrical switch, [1] sold since 1984 by San Francisco, California based Joseph Enterprises, Inc. Joseph Pedott marketed the clapper with the slogan "Clap On! Clap Off! The Clapper!". [2] The Clapper plugs into a U.S.-type electrical outlet, and allows control of up to two devices plugged into the Clapper. [3]
Joseph Enterprises was founded in California in 1981 by Joseph Pedott. The Clapper, a switch activated by clapping, was first sold to the public on September 1, 1985. The Chia Pet was first introduced on September 8, 1977, and although its name is trademarked, the Chia Pet is not a patented invention.
A clapper is a basic form of percussion instrument. It consists of two long solid pieces that are struck together producing sound. They exist in many forms in many different cultures around the world. Clappers can take a number of forms and be made of a wide variety of material. Wood is most common, but metal and ivory have also been used.
The product: The Clapper The price: $24.95 plus $6.95 shipping and handling for a total of $31.98. The claims: It turns up to two plug-in lights or equipment on and off with claps. The Buy-o-meter ...
A ling consists of a hollow bell body and a clapper which is hung within. It produces sound when the clapper strikes the internal rim of the bell. Initially made of ceramic, they were later cast in copper and (most commonly) bronze. [1] [2] Metal ling have been divided into three types according to their shape. Type A, the oldest form, have ...
The clapper on an English handbell is on a hinge and moves back and forth in a single direction, unlike a school bell in which the clapper swings freely in any direction. It also has a spring that holds the clapper away from the casting after the strike to allow the bell to ring freely.
Larger bells may be swung using electric motors. In some places, such as the Salzburg Cathedral, the clapper is held against the sound bow with an electric clasp as the bell swings up. The clasp would release the clapper to provide a cleaner start to ringing. To silence the bell, the clasp catches and locks the clapper back in place. [14]
His book Hitler and Nazi Germany was first published in 1987, with recent editions coauthored by David Redles. Along with William J. Duiker, he is also the co-author of World History and The Essential World History, both in their ninth editions. [6] Discovering Our Past: A History of the World, Early Ages (2018) ISBN 9780076767380