3/31/2023 0 Comments Subatomic particles definition![]() ![]() The electrons are spinning around the atomic nucleus. All matter except dark matter is made of molecules, which are themselves made of atoms. These are the smallest building blocks of matter. The physical world is composed of combinations of various subatomic or fundamental particles. Known elementary particles include the fundamental fermions and the fundamental bosons. Thus it is unknown whether it is composed of other particles. What really matters is to understand that protons and electrons have opposite charges.In particle physics, an elementary particle or fundamental particle is a particle whose substructure is unknown. The positive and negative charges are just by definitions: if we wanted, we could define protons to be negatively charged and electrons to be positively charged. according to equations like $F=\frac $, where $q_1$ and $q_2$ are the charges of two particles. When an electron is charged with a certain magnitude or charge, then we have a certain magnitude of electrical force etc. What do physicists mean when they say that a proton is positively charged and electron is negatively charged?Ĭharge refers to a property. You need to learn stuff like Yang-Mills theory to actually understand the nature of subatomic charge. However, I can't just say that charge is a fundamental property which we must just accept to be true without an explanation.Rather, the explanation is too complicated to just 'answer', you need to study entire subjects to get the 'real' explanation. The theory encompassing the quarks and their properties is called Yang-Mills theory with associated Lie algebras U(1), SU(2), and S(3) which are called gauge groups." "The reason for the electric charge is that the quarks couple to a U(1) gauge vector-potential also known as the photon, which endows the quark with an electric charge. As a physicist, I blame electrical engineers.) The repelled and attracted electrons start moving, and these moving electrons can be used to do work. (The signs of battery terminals are actually opposite the conventional usage of positive and negative when referring to elementary charges. To help connect it to more familiar concepts, consider this: The negative end of your battery terminal attracts electrons and the positive end repels them. Your author is right when he says that charges attract or repel other charges. These moving protons create a current (moving charge) which creates a magnetic field. The protons will repel (like charges repel) and fly away from each other. If I wanted a magnetic field to be generated, I could get one from a single pair of charges, say, two protons placed next to one another. What is happening at a fundamental level is that an electric field is being applied (via the potential across the battery) that is causing those electrons to move. It is the tendency for charged particles to move in an electric field that lets us extract work from them.Ī typical electronic device uses moving electrons to generate magnetic fields (moving electrons cause currents, and currents generate magnetic fields) and these magnetic fields can move magnets, causing a motor to turn. In a sense, a single pair of charged particles are a battery, if you arrange them correctly and can figure out how to get them to do useful work for you. When physicists say that a particle has electric charge, they mean that it is either a source or sink for electric fields, and that such a particle experiences a force when an electric field is applied to them. I found this definition/description a bit lacking, and I still don't grasp the nature of a "subatomic charge", or what do physicists mean when they say that a proton is positively charged and electron is negatively charged? Is deemed charged by its capacity to attract or repel other charged Instead, the definition is almost circular. A particles's charge is not a measure of the particles'sĮnergy content. Proton and electron are little batteries of energy compared to the Particles while the neutron is not, however, doesn't mean that the In saying that the proton and electron are charged The compartment of your digital camera to take many exciting closeups When you talk about a fully charged battery, you probably have in mindĪ battery loaded with a stored source of energy that you can slip into I came across this section on subatomic charges that made me wonder about the nature of the positive and negative charges that we associate with protons and electrons respectively. I was recently reading a popular science book called The Canon - The Beautiful Basics of Science by Natalie Angier, and it talks about subatomic particles like protons, neutrons and electrons in chapter 3. ![]()
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