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In the mid 1770’s, During America’s War of Independence with England, David Bushnell, an inventive guy on the American side, created the world’s first attack submarine. Using whiskey barrel technology, he made a watertight, clam shell-shaped vehicle with barely enough room for one man. The thing, Continue reading “Submarines”
History of the piano – Its immediate predecessor was called a clavichord. The volume of a clavichord, like a harpsichord, cannot be controlled, the loudness of each note is the same. However, the pitch of the notes of a clavichord change depending on whether the player presses the keys hard or light. Hit a key hard and the pitch goes up! The forte-piano was a considerable improvement, because the volume was adjustable depending on how hard the player hits the keys. Later the name evolved to pianoforte, which in Italian means “soft-loud,” and finally piano.
In the 1940’s, all the young girls crowded the stage and fainted over a popular singer, just like they did in later eras over Elvis Presley, the Beatles, and now modern singers such as Justin Bieber. Who was it then? Frank Sinatra.
The most valuable solid gold item is the inner coffin (of three) in which King Tut was put to rest. It weighs more than a small pickup truck (2,447 pounds or 1,109 kg) and is worth over 14 million US dollars.