Vehicle horn England, developed a standard electric car horn in 1910. Car horns are usually electric, driven by a flat circular steel diaphragm that has an electromagnet acting on it in one direction and a spring pulling in the opposite direction. The diaphragm is attached to contact points that repeatedly interrupt the current to that electromagnet causing the diaphragm to spring back the other way, which complete the circuit again. This arrangement opens and closes the circuit hundreds of times per second which creates a loud noise like a buzzer or electric bell, which sound enters a horn to be amplified. There
A Greek–English Lexicon to this riddle: which was by Scott and which was by Liddell?</poem> Two condensed editions of LSJ were published by Oxford University Press and remain in print. In 1843, the same year as the full lexicon's publication, "A Lexicon: Abridged from Liddell and Scott's Greek–English Lexicon", sometimes called "the Little Liddell" was published. Several revised editions followed. For example, a reprint, re-typeset in 2007, of the 1909 edition is available from Simon Wallenberg Press (). In 1889, an intermediate edition of the lexicon, "An Intermediate Greek–English Lexicon", was prepared on the basis of the seventh edition (1882) of LSJ. In