a hydrogen bomb **IS** a nuclear bomb. There are two types of nuclear bomb: *fusion* and *fission*
*Fission*: everything is made of proton and neutron. these two are like universe’s building Lego. If it fits, you can make a building but it’s not a guarantee that the building will stand strong. It’s also the case with atoms. There are a lot of combination you can make with protons and neutrons, but most will just break down and not stay for long. Fission bombs work by adding another piece to a fairly stable ‘Lego building’, which turns it unstable and fall, breaking into smaller pieces that are more stable. During this process, it also releases energy which causes the boom
*Fusion*: Hydrogen bombs are fusion bombs. For fusion bombs, it releases energy when you put two ‘Lego pieces’ together, instead of when you take them apart. Imagine a room with these ‘Lego pieces’ floating around. It’s really difficult for them to find the right position to click and form a bigger piece if they’re moving slow or if the room is far bigger than the pieces. So the only way to get them form a bigger piece is by speeding it up (giving the atoms energy by heating it up) so there will be more crashes (and hopefully some will click) or simply by making the room smaller (increasing pressure of the atoms). When two pieces finally click and form a bigger one, it releases energy and causes the boom for fusion bombs. Two hydrogen forms a helium
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