Thermonuclear weapon
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A thermonuclear weapon, fusion weapon or hydrogen bomb is a second-generation nuclear weapon, using nuclear fusion. The most destructive weapons ever created, their yields typically exceed first-gener
Edward Teller in 1958
Operation Castle thermonuclear test, Castle Romeo shot
Casing of the Soviet Tsar Bomba, the largest nuclear weapon ever built and tested, Sarov, Russia.
Operation Grapple on Christmas Island was the first British hydrogen bomb test.
The British hydrogen bomb programme was the ultimately successful British effort to develop hydrogen bombs between 1952 and 1958. During the early part of the Second World War, Britain had a nuclear w
Sir John Anderson, the minister responsible for Tube Alloys
James Chadwick (left), the head of the British Mission, with Major General Leslie R. Groves Jr., the director of the Manhattan Project; Richard C. Tolman, his scientific advisor; and Henry DeWolf Smyth
President Harry Truman and prime ministers Clement Attlee and Mackenzie King boarding USS Sequoia for discussions about nuclear weapons, November 1945