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Sound waves are produced by all vibrating objects. Loudspeakers work by converting electrical energy into kinetic energy. This vibrates the cone which creates the sound waves.
May 31, 2015 · In 1807 Thomas Young (1773-1829) coated a glass cylinder with lamp-black, pushed a pin through a flexible diaphragm, and by shouting into the diaphragm was able to see the sound waves scratched into the lamp-black.
Apr 19, 1982 · In World War I. Britain still ruled the waves. A fleet of 1,350 vessels, including 42 battleships and battle cruisers, flew the service’s white ensign. In World War II, the navy continued to be...
- Q: Why Was The Navy So Successful?
- Q: Why Did Britain Become Obsessed by Its Navy?
- Q: Did The Navy Cause The Industrial Revolution?
- Q: Was The Navy Ever Defeated?
- Q: Why Do We Remember Nelson?
- Q: Was It All 'Rum, Sodomy and The Lash'?
- Q: What Was The Pax Britannica?
- Q: Why Did Britain Lose Her Mastery of The Seas?
- Q: How Did The Navy Shape The Modern World?
AEngland's and then Britain's navy was not pre-destined for greatness. The English were late to trans-oceanic trading in the 15th century. In the 16th century, despite eye-catching successes like the exploits of Drake and Hawkins, England was only taking her first steps as a naval power. In the 17th century, Holland and France were both superior to...
AEnglishmen grew to love their navy so much that by the 19th century it was a favourite subject of novels, music hall ditties, art, fashion and theatre. From the first time Hawkins landed in Plymouth with a hull full of Spanish gold, the people of England looked to the west. By the time the Spanish Armada was defeated in 1588, as Englishmen watched...
AThe navy contributed to, and benefited from, the Industrial Revolution that swept across Britain in the 18th century. The navy's vast demand for iron stimulated production. In the early part of the century, Ambrose Crowley's ironworks were the largest in the world and the biggest civilian enterprise in the country; his biggest customer was the nav...
AIt is easy to believe that the navy was utterly dominant between the late 17th century and the First World War. However there were some disastrous defeats. The most important, although least talked about, was in Chesapeake Bay, North America on 5 September 1781. A French squadron succeeded in repulsing a British fleet that was sailing to relieve G...
ANelson is just one of a galaxy of successful Royal Naval commanders. Blake, Russell, Anson, Hawke, Boscawen, Rodney, Howe, Jervis, Duncan and Saumarez and many others all enjoyed spectacular success at battles of equal, if not greater, importance to Nelson's victory at Trafalgar. Yet there was something special about the diminutive man who lost an...
AAs so often, Winston Churchill's knack for memorable sound bites actually distorts the truth! Conditions were certainly hard in the sailing navy; rations were rotten, water spoiled within days. Men were 'pressed' into service often against their will, for long periods of time. Punishments were famously draconian, with many crimes, like striking an...
AThere is a widespread fallacy that after the end of the Napoleonic Wars, Britain remained essentially at peace for most of the 19th century. In fact, although the 19th century did belong to Britannia, it was far from peaceful and the navy were at the forefront of the fighting. Britain's vast industrial and financial might translated into a navy th...
ABritain ruled the waves, in part, because no one else attempted to. The other candidates, France, America and Russia, all underwent internal upheaval or had other priorities for much of the 19th century that prevented them from making a serious challenge to British control of the world's oceans. Towards the end of the century, however, as other na...
AIn 2009 the world is made up of a majority of nation states that largely embrace ideas of free trade, democracy, individual rights, and limited government. English is the international language of business and culture. This is no accident. It is the result of the domination of the Royal Navy, which underpinned the spread of those British ideas. La...
May 5, 2021 · The equations we now know as “Maxwell’s” have in fact been taken from papers Heaviside published in 1885. He arrived at this distillation of the theory—“Maxwell redressed,” as Heaviside called it—while searching for the best way to represent the propagation of energy along a telegraph cable.
Learn about and revise sound, sound waves, ultrasound and seismic waves with GCSE Bitesize Physics.
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Jan 18, 2024 · As the Empire screened sound newsreels, it was clearly wired for sound by January 1929, but the bulk of its programme remained silent until May when its feature presentation was Harry Beaumont’s Broadway Melody of 1929, which was the first sound film to win the Academy Award for Best Feature Film. The cinema’s programme had a new look to ...
