Search results
Results From The WOW.Com Content Network
20th-century Swiss inventors (24 P) U. 20th-century Ukrainian inventors (14 P) Y. Yugoslav inventors (10 P) Pages in category "20th-century inventors"
20th-century inventors (31 C, 30 P) P. 20th-century percussion instruments (21 P) Pages in category "20th-century inventions" The following 128 pages are in this ...
4.2 20th century. 4.2.1 1900s. 4.2.2 1910s. 4.2.3 ... Some two dozen inventors had experimented with electric incandescent lighting over the first three-quarters of ...
American inventors, persons who created or discovered a new method, form, ... 20th-century American inventors (1,337 P) 21st-century American inventors (324 P)
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.
Pages in category "20th-century American inventors" The following 200 pages are in this category, out of approximately 1,332 total. This list may not reflect recent changes .
Heron (c. 10–70), Roman Egypt – usually credited with invention of the aeolipile, although it may have been described a century earlier; John Herschel (1792–1871), UK – photographic fixer (hypo), actinometer; Harry Houdini (1874–1926) U.S. – flight time illusion; Heinrich Hertz (1857–1894), Germany – radio telegraphy ...
20th century. 1900: Reflector sight invented by Howard Grubb. [46] 1905: Underground conveyor belt invented by Richard Sutcliffe. [47] 1909: Irish logarithm invented ...