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Oscillations don't always remain particles. Charged particles interact with the electromagnetic field. Oscillations in the electron field can affect oscillations in the electromagnetic field. So as, let's say, an electron is speeding around here and there, it's been found that time is the electric field itself is times the electromagnetic field oscillation. Therefore, it's sometimes a photon, sometimes an electron is dropping. As well, that oscillation can also produce other oscillations that become other particles. So every particle in the cosmos has a corresponding field, and they all interact with each other. So all these wiggles and wiggles produced by other wiggles combine to create a moving electron or other particle. The oscillations that continue and travel are called particles. Those that come into existence for a brief period of time are called virtual particles. Each of these is still just oscillations of these vast fields that extend indefinitely. And when these particles are close enough to interact, they produce and exchange virtual particles from a huge intermingling of oscillations and counter-oscillation. And this is the nature of quantum field theory. So one final thing to mention, the Heidenberg uncertainty principle. And it's required for all this. So this is required to help overcome temporary violations of energy conservation. As I was mentioning about particles popping in and out of existence. Well, the universe was in a coming to existence with a finite amount of matter and energy. So you can't create matter or energy or destroy energy or matter. It's all converted back and forth. So there's a certain amount there. So having particles pop in and out sounds like you're violating this principle of energy conservation. This is repeater station for the Heidenberg uncertainty principle. Help get around that. So this is why virtual particles pop in and out almost instantaneously. There's what's referred to as borrowed energy. This allows a temporary violation of energy conservation due to time energy uncertainty. And so just to put it in other terms, uncertainty principle, says that there's an absolute limit to how well pairs of properties can be known at a particular time. So if you nail one property down, unless you know about the other with any certainty, therefore a system's energy cannot be known with any height of precision. And that energy can change over a period of time. So there's certain things about a system that you can't know. You might know the position of an electron, but you might not have enough information to give up the precise amount of data on it, momentum, et cetera, et cetera. So therefore, these systems of energy cannot be known with any height of precision. And that energy can change over periods of time by some amount. And this energy fluctuation is the mechanism that lets virtual particles pop in and out of existence and maintain the laws of energy conservation.