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February 4 – S. N. Bose, Indian physicist (b. 1894) April 12 – Cornelis Simon Meijer, Dutch mathematician (b. 1904) May 4 – Ludwig Koch, German-born British animal sound recordist (b. 1881) May 18 – Harry Ricardo, English mechanical engineer (b. 1885) May 22 – Irmgard Flügge-Lotz (b. 1903), German-American mathematician and aerospace ...
Pages in category "Products introduced in 1974" The following 24 pages are in this category, out of 24 total. This list may not reflect recent changes. B. Baconzitos;
Computer-related introductions in 1984 (4 C, 92 P) Cameras introduced in 1984 (1 P) M. Mobile phones introduced in 1984 (1 P) 1984 musical instruments (1 P) T.
1974: The lithium-ion battery is invented by M. Stanley Whittingham, and further developed in the 1980s and 1990s by John B. Goodenough, Rachid Yazami and Akira Yoshino. It has impacted modern consumer electronics and electric vehicles. [508] 1974: The Rubik's cube is invented by Ernő Rubik which went on to be the best selling puzzle ever. [509]
2650 BC: The oldest extant record of a unit of length, the cubit-rod ruler, is from Nippur. 2600 BC: The oldest attested evidence for the existence of units of weight, and weighing scales date to the Fourth Dynasty of Egypt, with Deben (unit) balance weights, excavated from the reign of Sneferu, though earlier usage has been proposed. [4]
The invention of the spinner is credited to James J.D. Gragg of Tulsa, Oklahoma who filed a patent on October 28, 1992 and was issued United States Patent #5,290,094 on March 4, 1994. [8] 1994 CMOS image sensor. Early prototype of a CMOS image sensor
First known case of Bovine spongiform encephalopathy, in England. [1]The enzyme telomerase is discovered by Carol W. Greider and Elizabeth Blackburn in the ciliate Tetrahymena.
A bronze mirror found in the grave of Marquis of Haihun in China (died in 53 BC) was 47 centimeters across (at the thickness of 12 millimeters). [10] Most researchers assume the cheval mirror to be a European invention (however, Wu Hung asserts that the furniture piece was first created in China using European glass panes). [11]