Is hydrogen fusion similar with cold fusion?
Fusion is a process in which two particles or atoms combine to make another kind of particle or atom, and give off a great deal of energy in the process. Mostly when we are talking about fusion we mean hydrogen fusion, in which hydrogen atoms fuse to make a helium atom. Other kinds of fusion do happen in stars, but hydrogen fusion is the only man-made kind, and is what powers an H-Bomb, aka Hydrogen Bomb. Normally fusion only happens at very very high temperatures, because hydrogen atoms repel each other and can only be fused when they are moving at very high speed, which is the same things as having a lot of energy and being very hot. The temperatures needed are so high that an H-Bomb needs a regular atom bomb as a detonator to reach the required temperatures. Some people have theorized that fusion could occur at much cooler temperatures, or even room temperature. Pons and Fleischmann became famous for claiming to have achieved just that, but their claims were found to be mistaken. So
