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Events from the year 1975 in the ... into the 21st century. January 18 – The United States Atomic Energy ... of 1975; Timeline of United States history (1970–1989
1974 – Watergate scandal: Ford pardons Nixon for any crimes he may have committed against the United States while president, believing it to be in the "best interests of the country." 1974 – Restrictions are removed on holding private gold within the United States. 1975 – President Ford signs The Helsinki Accords.
1837 – First American patent for an electric motor (U.S. patent 132). 1850 – The first explicit statement of the first and second law of thermodynamics, given by Rudolf Clausius. [7] 1860 – Lenoir 2 cycle engine [8] 1872 – Brayton Engine; 1877 – Nicolaus Otto patents a four-stroke internal combustion engine (U.S. patent 194,047). [9]
November 1: The United States successfully detonates the first hydrogen bomb, codenamed "Ivy Mike", at Eniwetok Atoll in the Marshall Islands in the central Pacific Ocean, with a yield of 10.4 megatons. Development of the first effective polio vaccine by Jonas Salk. The Mau Mau Uprising begins in Kenya. The Slansky Trial in Czechoslovakia.
1975 in the United States by state or territory (54 C) 1975 events in the United States by month (12 C) 1975 disestablishments in the United States (44 C, 15 P)
The canal was cleared in 1974 and opened again in 1975 [9] after the 1973 Yom Kippur War, when Egypt tried to take back the Sinai. [10] [11] OAPEC countries cut production of oil and placed an embargo on oil exports to the United States after Richard Nixon requested $2.2 billion to support Israel in the war. Nevertheless, the embargo lasted ...
1975 – Hazardous Materials Transportation Act; 1976 – Resource Conservation and Recovery Act (RCRA) (amended 1984, 1996) 1976 – Toxic Substances Control Act (TSCA) (amended 2016) 1977 – Clean Water Act (amended FWPCA of 1972) 1977 – Surface Mining Control and Reclamation Act; 1978 – National Energy Conservation Policy Act
This engine was fuelled by gas vapours, used the piston's intake stroke to draw in outside air, and the air/fuel mixture was ignited by an external flame. [6] Another gas engine was also patented in 1794 by Thomas Mead. [7] 1801: The concept of using compression in a two-stroke gas engine was theorised by French engineer Philippe LeBon D ...