The only nuclear weapons ever used in war were the "Little Boy" a single stage 80% enriched uranium fission gun bomb and "Fat Man" a single-stage plutonium fission implosion bomb dropped by the USA on Japan at the end of WWII. A "hydrogen bomb" uses that same first plutonium and/or uranium fission explosion to then trigger hydrogen fusion, for 1000 times as powerful an explosion.
They were first tested on Nov 1, 1952 at Eniwetok Atoll in the Pacific. There has never been a hydrogen bomb used in war.
1952
Here is a video link from BBC:
http://www.bbc.co.uk/mediaselector/check/player/nol/newsid_6520000/newsid_6522800?redirect=6522847.stm&news=1&bbram=1&bbwm=1&nbram=1&nbwm=1
The Hydrogen bomb was finished in 1951 on Harry Truman's orders in 1950 by Dr. Edward Teller.
August, 1945 in Japan.......................................
September 1954
The British tested the hydrogen bomb at Marilinga. There may have been more sites. See the attached link below.
The H-bomb, or Hydrogen bomb, is a fusion bomb and has never been used except for test explosions. There have been no "h bombings."
Element number 99, later named Einsteinium, was discovered in the debris from the first hydrogen bomb explosion in 1952. Only a tiny number of atoms were detected, formed from the decay of neutron-bombarded californium nuclei.
J. Robert Oppenheimer allowed for the fact that such a bomb existed as far back as May 10th, 1945. Remember that the Manhattan Project was undertaken using the utmost secrecy. The atomic bomb was first exploded at the top secret base of Alamogordo, NM on July 16th, 1945. The bomb was first used in warfare at Hiroshima and Nagasaki, Japan in August 1945. . Compliments of www.manuscriptex.com
The first atom bomb was the test explosion at the White Sands test range in New Mexico. The first use in anger was at Hiroshima in Japan.
China's first nuclear test took place in 1964 and first hydrogen bomb test occurred in 1967.
that we knew how to build one
The first test of a fusion (hydrogen) bomb required tons of equipment and supplies just to test several theories. There would be no way to package all of that into an air-deliverable bomb, or mashed up into the nosecone of a missile. Once the theories were proven, or failed, improvements were made and miniaturization, that then allowed the hydrogen bomb to be deliverable.
Ivy.There were 2 tests in this series:Mike - first test of Teller-Ulam configuration hydrogen bomb design, 10 to 12 megatonsKing - test of highest yield pure fission atomic bomb design. 500 kilotons
A hydrogen bomb was not dropped on Japan. It was dropped years later as a test and to determine how it acted in comparison to the plutonium and uranium bombs.
No.However the first US hydrogen bomb test Ivy Mikecompletely destroyed an island (Eugelab in Enewetak Atoll), turning it into a crater.
authorizing full-scale work on the hydrogen bomb. :]
The British tested the hydrogen bomb at Marilinga. There may have been more sites. See the attached link below.
1949 thru 1950 prompted by USSR atomic bomb test.
The first Soviet test of a hydrogen bomb, took place on a tower on August 12, 1953. It used a layer-cake design of alternating fission and fusion fuels (uranium-235 and lithium-6 deuteride) and produced a yield of 400 kilotons, mostly from fusion-neutron-initiated fission rather than fusion. This device however was not what is now considered a hydrogen bomb, instead it would be called a boosted fission bomb. However it was the first bomb using nuclear fusion that was small enough and light enough to be deliverable by bomber. The first Soviet test of a "true" hydrogen bomb was airdropped and produced a yield of 1.6 megatons on November 22, 1955. This was the world's first actual airdropped fusion bomb.
The first hydrogen bomb test was Ivy Mike on the island of Eugelab in Eniwetok atoll. The device was a cylinder 80 feet tall and 20 feet in diameter weighing over 500 tons. The yield was 10 megatons. Eugelab ceased to be an island and became a water filled crater. This crater was later used for other lower yield hydrogen bomb tests in other series.
The test location of the first atomic bomb was located in California as it was known as the Manhattan Project.