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Gunpowder is the first explosive to have been developed. Popularly listed as one of the "Four Great Inventions" of China, it was invented during the late Tang dynasty (9th century) while the earliest recorded chemical formula for gunpowder dates to the Song dynasty (11th century).
The piano was invented by Bartolomeo Cristofori (1655-1731) of Italy. Cristofori was unsatisfied by the lack of control that musicians had over the volume level of the harpsichord. He is credited for switching out the plucking mechanism with a hammer to create the modern piano in around the year 1700.
Mar 29, 2024 · Gunpowder, any of several low-explosive mixtures used as propelling charges in guns and as blasting agents. The first such explosive was black powder—a mixture of saltpeter (potassium nitrate), sulfur, and charcoal—which is thought to have originated in China, where it was being used in fireworks by the 10th century.
- The Editors of Encyclopaedia Britannica
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Nov 20, 2023 · The invention of the piano represents a remarkable chapter in the history of musical instruments. It marked a revolutionary departure from its predecessors, the harpsichord and clavichord, by introducing the ability to control volume and expressiveness through a keyboard instrument.
Dec 13, 2023 · The invention of gunpowder is attributed to Chinese alchemists who, during the Tang Dynasty, were deeply immersed in experiments involving various chemical substances. Their primary goal was not to create an explosive material but to find a potion that would grant eternal life.
Nov 1, 2023 · Though gunpowder is an invention of undeniable importance, its origins and history are poorly understood. In the West, there was a centuries-long debate around gunpowder’s exact point of origin. Thanks to the pioneering work of Joseph Needham in the 1960s and 1970s, we can now say that gunpowder was developed in China at some point during the ...
Piano history and musical performance. The modern form of the piano, which emerged in the late 19th century, is a very different instrument from the pianos for which earlier classical piano literature was originally composed. The modern piano has a heavy metal frame, thick strings made of top-grade steel, and a sturdy action with a substantial ...
