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20th-century percussion instruments (21 P) Pages in category "20th-century inventions" The following 128 pages are in this category, out of 128 total.
Early 3rd century: Woodblock printing is ... The 15th-century invention of the printing press with movable type by the German Johannes Gutenberg. ... 20th century. 1900s
The 20th century saw mathematics become a major profession. As in most areas of study, the explosion of knowledge in the scientific age has led to specialization: by the end of the century there were hundreds of specialized areas in mathematics and the Mathematics Subject Classification was dozens of pages long. [72]
The electric flash-lamp is a device that uses an electrical circuit to trigger a fuse to ignite explosive powder such as magnesium, for a brief sudden burst of bright light "flash" from a chemical reaction of flash powder burning. It was principally used for flash photography in the early 20th century, but had other uses as well.
#2 An Early Motorised Scooter. ... The 16th century invention, the Runcible Spoon, outshined the spork even though it failed to become the newest, trendiest dining utensil. Textual references to ...
The Second Industrial Revolution continued into the 20th century with early factory electrification and the production line; it ended at the beginning of World War I. Starting in 1947, the Information Age is sometimes also called the Third Industrial Revolution.
The Model T revolutionized transportation in the early 20th century. A junction of the Interstate Highway System in California The technology for creating an automobile emerged in Germany in the 1870 and 1880s: Nicolaus Otto created a four-stroke internal combustion engine , Gottlieb Daimler and Wilhelm Maybach modified the Otto engine to run ...
From the first Apple computer to the COVID-19 vaccine, here are the most revolutionary inventions that were born in the U.S.A. in the past half-century.