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Quartet of two-dipole Yagi arrays (Hirschgeweih) of the German FuG 220 VHF-band radar on the nose of a late-World War II Bf 110 night fighter aircraftThe antenna was invented by Shintaro Uda of Tohoku Imperial University, Japan, [5] in 1926, with a lesser role played by Hidetsugu Yagi.
Spelljammer: Adventures in Space is a boxed set for the 5th edition of the Dungeons & Dragons fantasy role-playing game.The boxed set includes three sourcebooks: the Astral Adventurer's Guide (a Spelljammer campaign setting guide), the Light of Xaryxis (an adventure module), and Boo's Astral Menagerie (a bestiary of Wildspace and Astral Sea creatures).
Project Echo was the first passive communications satellite experiment. Each of the two American spacecraft, launched in 1960 and 1964, were metalized balloon satellites acting as passive reflectors of microwave signals.
The first nuclear explosive devices provided the basic building blocks of future weapons. Pictured is the Gadget device being prepared for the Trinity nuclear test.. Nuclear weapons design are physical, chemical, and engineering arrangements that cause the physics package [1] of a nuclear weapon to detonate.
An artist's depiction of a 2000s-era desktop-style personal computer, which includes a metal case with the computing components, a display and a keyboard (mouse not shown). A personal computer, often referred to as a PC or simply computer, is a computer designed for individual use. [1]
The Northrop F-5 is a family of supersonic light fighter aircraft initially designed as a privately funded project in the late 1950s by Northrop Corporation.There are two main models: the original F-5A and F-5B Freedom Fighter variants, and the extensively updated F-5E and F-5F Tiger II variants.
The siku is an Andean pan flute This pan flute from the Solomon Islands is made from bamboo bound with reeds and rope. A pan flute (also known as panpipes or syrinx) is a musical instrument based on the principle of the closed tube, consisting of multiple pipes of gradually increasing length (and occasionally girth). [1]
The Kornet has since been upgraded to the Kornet-EM, and its thermobaric variant has a maximum range of 10 km (6 mi) and has a TNT equivalence of 7 kg (15 lb). [46] The 300 mm (12 in) 9M55S thermobaric cluster warhead rocket was built to be fired from the BM-30 Smerch MLRS .