Briefing room (continued)
In a coin factory, hot metal is pressed into coins. They only come in specific sizes and values, as 1p, 2p, 5p, 10p, 50p and 1 pound.
Similarly, nature does not allow energy to be converted into just any kind of matter. Nature has provided us with 'moulds', corresponding to a precisely defined amount of energy, as well as having some other particular properties.
These moulds are analogous to particles, the most important ones in our daily lives being the proton, the neutron and the electron. They have very precisely defined properties, such as their mass, their electric charge or the way they interact with other particles.
So can I transform energy into a single proton or a single electron?
