the first successful flight of V-2(A-4) was on 3 October 1942 (Peenemünde, Blizna). this rocket was 14 metres in length, 12500 kg of weight and can carry nearly a tonne of explosive. its propellant: 3810 kg (75% ethanol, 25% water) + 4910 kg of liquid oxygen. the combustion burner reached a temperature of 2500–2700°C. the rocket burned for 58 seconds and reached a height of 190 kilometres
16 July 1945 at 05:29:45 local time (Trinity Site, Socorro, New Mexico) the device Gadget exploded with an energy equivalent to around 20 kilotons of TNT. it left a crater of radioactive glass in the desert 3 m deep and 330 m wide. the shock wave was felt over 160 km away, and the mushroom cloud reached 12 km in height
Electronic Numerical Integrator And Calculator was completed in 1946 (University of Pennsylvania). it occupied about 200 m2, used 17468 vacuum tubes, 15000 relays, weighing almost 50 tons and consuming 200 Kilowatts of electricity. it boasted speeds one thousand times faster than electro-mechanical machines
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