who was the first to experiment with this?
Mark Oliphant.
Nuclear fusion
 Building on the early experiments in nuclear transmutation by Ernest Rutherford, laboratory fusion of hydrogen isotopes was accomplished by Mark Oliphant in 1932.
during world war ii the manhattan project was the name of the plan to To develop nuclear weapons. name an element that was used in making these weapons. Uranium. what type of weapons are the ones mentioned above? It is an explosive device that derives its destructive force from nuclear reactions, either fission (fission bomb) or from a combination of fission and fusion reactions (thermonuclear bomb). what is the latter reaction mentioned here? It is a reaction in which two or more atomic nuclei are combined to form one or more different atomic nuclei and subatomic particles.
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Nuclear fusion [SEP] Introduction
In 1920, Arthur Eddington suggested hydrogen-helium fusion could be the primary source of stellar energy. Quantum tunneling was discovered by Friedrich Hund in 1929, and shortly afterwards Robert Atkinson and Fritz Houtermans used the measured masses of light elements to show that large amounts of energy could be released by fusing small nuclei. Building on the early experiments in nuclear transmutation by Ernest Rutherford, laboratory fusion of hydrogen isotopes was accomplished by Mark Oliphant in 1932. In the remainder of that decade, the theory of the main cycle of nuclear fusion in stars was worked out by Hans Bethe. Research into fusion for military purposes began in the early 1940s as part of the Manhattan Project.