- published: 26 Aug 2014
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An electric watch, which commonly means any watch that is powered by electricity, has become a generic term for the first generation of electrically powered watches which appeared starting in 1957, before the invention of quartz watches in the 1970s. Their timekeeping element was either a traditional balance wheel or a tuning fork, driven electromagnetically by a solenoid powered by a battery. The hands were driven mechanically through a wheel train. They were superseded by quartz watches, which had greater accuracy and durability due to their lower parts count. Recent automatic quartz watches, which combine mechanical technology with quartz timekeeping, are not included in this classification.
A weak point in early balance wheel electric watches was the switch contacts on the balance wheel, which turned the solenoid on briefly to provide the impulse to keep the wheel oscillating. These wore out and did not operate reliably. Later designs used electromagnetic sensing, with a transistor in the circuit to turn the solenoid on.
Shia Saide LaBeouf ( /ˈʃaɪ.ə ləˈbʌf/; born June 11, 1986) is an American actor who became known among younger audiences for his part in the Disney Channel series Even Stevens and for his film debut in Holes (2003), based on the novel of the same title by Louis Sachar. In 2004, he made his directorial debut with the short film Let's Love Hate and later directed and shot the music video for "I Never Knew You" by rapper Cage. In 2007, LaBeouf starred as the lead in the commercially successful films, Disturbia and Transformers. His other films include Indiana Jones and the Kingdom of the Crystal Skull (2008), Transformers: Revenge of the Fallen (2009), Wall Street: Money Never Sleeps (2010), and Transformers: Dark of the Moon (2011).
LaBeouf was born in Los Angeles, the only child of Shayna (née Saide) and Jeffrey Craig LaBeouf. His mother is a dancer and ballerina turned visual artist and clothing jewelry designer. His father is a Vietnam War veteran who had numerous jobs. LaBeouf's mother is Jewish, and LaBeouf's father, who is of Cajun (French) descent, is Christian. LaBeouf was raised in his mother's Jewish religion and had a Bar Mitzvah; he was also baptized in the Angelus church.