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Achim Leistner is an Australian optician of German origin. [1] During his retirement, he was asked to join the Avogadro project to craft a silicon sphere with high smoothness. [2][1] Leistner studied optics at Optik Carl Zeiss in Jena, Germany, and in 1953 qualified as a precision optical craftsman. He moved to Australia in 1957, and worked in ...
Rahat. A number of Qassam Brigades militants infiltrated the Bedouincity of Rahat, north-east of Ofakimand 30 kilometres from Gaza, representing the furthest extent of the incursions by Palestinian militant groups on 7 October. Over a month after the initial attack, two militants were arrested by Israeli police.
The characteristic torus-shaped chamber is clad with graphite to help withstand the extreme heat. A tokamak (/ ˈtoʊkəmæk /; Russian: токамáк) is a device which uses a powerful magnetic field generated by external magnets to confine plasma in the shape of an axially symmetrical torus. [ 1 ]
The RPG-7[ a ] is a portable, reusable, unguided, shoulder-launched, anti-tank, rocket launcher. The RPG-7 and its predecessor, the RPG-2, were designed by the Soviet Union, and are now manufactured by the Russian company Bazalt. The weapon has the GRAU index (Russian armed forces index) 6G3. The ruggedness, simplicity, low cost, and ...
The Chernobyl sarcophagus, built to contain the effects of the 1986 disaster. A nuclear reactor is a device used to initiate and control a fission nuclear chain reaction. Nuclear reactors are used at nuclear power plants for electricity generation and in nuclear marine propulsion. When a fissile nucleus like uranium-235 or plutonium-239 absorbs ...
The F01/F02/F03/F04 is the fifth-generation 7 Series, which was produced from 2008 to 2015. The model range consisted of standard length and long wheelbase ("Li" models) sedans. The F01 was the first BMW to be available with a hybrid drivetrain ("ActiveHybrid 7"), 8-speed automatic transmission, and a turbocharged V12 engine.
Resident Evil 7: Biohazard[a] is a 2017 survival horror game developed and published by Capcom. The player controls Ethan Winters as he searches for his long-missing wife in a derelict plantation occupied by an infected family, solving puzzles and fighting enemies. Resident Evil 7 diverges from the more action-oriented Resident Evil 5 and ...
The IS-7 heavy tank design began in Leningrad in 1945 by Nikolai Fedorovich Shashmurin [1] [2] [5] Weighing 68 tonnes, thickly armoured and armed with a 130mm S-70 long-barrelled gun, it was the largest and heaviest member of the IS family [4] and one of the most advanced heavy tank designs. [1] An IS-7 during trials, 1948