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Particle Physics

Relatively recent experimental results have confirmed what philosophers throughout history had theorized all along; that all matter is made up of elementary particles. Those curious about this cutting-edge field of physics known as particle physics should post their questions here, including those about fundamental particles, fundamental forces, Grand Unified Theories, and the extraordinary devices that have been or need to be engineered to research them.

3,842 Questions

Does electrons move from one object to anther when rubbed together?

Yes, when two objects are rubbed together, electrons can transfer from one object to the other. This transfer of electrons leads to one object becoming positively charged (loses electrons) and the other becoming negatively charged (gains electrons).

What happens to the electrons when an object is magnetized?

When an object is magnetized, the alignment of the electrons within the atoms of the material becomes coordinated, creating a magnetic field. This alignment allows the material to exhibit magnetic properties such as attracting or repelling other objects.

What is the antiparticle of a positron?

The antiparticle of a positron is an electron. Both the positron and electron have the same mass but opposite charge, with the positron having a positive charge and the electron having a negative charge.

Where can electrons be found?

Electrons are subatomic particles that are found within atoms, specifically in the electron cloud surrounding the nucleus. They are negatively charged and play a key role in chemical reactions and electricity. Electrons can also be found in free form in certain situations, such as in cathode ray tubes.

What is a Z-boson?

A Z-boson is an elementary particle that mediates the weak nuclear force. It is electrically neutral and is involved in processes such as neutrino interactions and particle decays. The Z-boson has a mass of about 91 GeV/c².

What is a Z boson?

The Z boson is an elementary particle that mediates the weak force, one of the fundamental forces of nature. It is electrically neutral and plays a crucial role in processes such as nuclear beta decay and neutrino interactions. The discovery of the Z boson in 1983 provided strong evidence for the unification of the weak electromagnetic forces.

What if carbon had one additional neutron but the other subatomic particles remained the same this slightly different atom would be called?

It would still be called carbon. THIS ACTUALLY EXISTS! The number of protons determines an element. Atoms with the same number of protons but different numbers of neutrons are said to be different ISOTOPES of an element. For example, the most common isotope of carbon is called carbon-12; since carbon has 6 protons, it means that the remaining 6 particles are neutrons. However, carbon-13 (6 protons, 7 neutrons) and carbon-14 (6 protons, 8 neutrons) also exist in nature.

What is the anti-particle of an electron?

That is called an anti-electron, also known as a positron.

That is called an anti-electron, also known as a positron.

That is called an anti-electron, also known as a positron.

That is called an anti-electron, also known as a positron.

What is an antibottom quark?

An antibottom quark (or b-bar quark) is the antiparticle of a bottom quark. It has the same mass as a bottom quark but opposite electric charge and other quantum numbers. When a bottom quark meets an antibottom quark, they can annihilate each other and produce energy.

What is an anti-beauty quark?

An anti-beauty quark, also known as a bottom antiquark, is the antiparticle counterpart of the beauty quark. It is a fundamental particle that has the opposite electric charge and other quantum numbers compared to the beauty quark. When a beauty quark and an anti-beauty quark pair up, they annihilate each other, releasing energy in the form of other particles.

What is an antiboson?

An antiboson is the antiparticle of a boson, which is a type of subatomic particle that follows Bose-Einstein statistics. When an antiboson interacts with a boson, they can annihilate one another, releasing energy in the process.

What is an anti-charm quark?

An anti-charm quark is the antiparticle of the charm quark. Charm quarks are a type of elementary particle that is a building block of matter, as described in the Standard Model of particle physics. Anti-charm quarks have an electric charge of +2/3 and are involved in various particle interactions.

What is an anti-down quark?

An anti-down quark is the antimatter counterpart of a down quark, one of the elementary particles that make up protons and neutrons in the atomic nucleus. It has opposite electric charge to a down quark and can combine with other quarks to form antimatter particles.

What is an antielectron?

An antielectron, also known as a positron, is the antimatter counterpart of an electron. It has the same mass as an electron but carries a positive charge instead of a negative charge. When an antielectron and an electron meet, they annihilate each other, releasing energy in the form of photons.

What equals neutrons with protons?

In a neutral atom, the number of neutrons is usually approximately equal to the number of protons to maintain electrical neutrality. This balance ensures that the positive charge of the protons is counteracted by the negative charge of the electrons, leading to a stable atom.

Why do electrons surround the nucleus?

Electrons surround nuclei due to the nature and strength of the fundamental forces and laws of physics. They are attracted to the nucleus because of their charge; since opposite charges attract, the negatively charged electrons are attracted to the positive nucleus through the electromagnetic interaction (or, electrostatically). They don't collide spontaneously with the nucleus because of several effects which result in the stability of orbits that don't intersect the location of the nucleus, most significantly the energy they possess, but also including quantum considerations such as the size of the wave function and other wave motion properties, and laws about confinement, and the uncertainties in the balance between potential and kinetic energy; one way of thinking of it is that the probability density of locating the electron in a radial direction away from the nucleus peaks at the Bohr radius -- often regarded as "the size" of the orbital -- and approaches zero as one gets closer to the nucleus.

Where is the electron cloud most dense?

usually it is the second to third layer of electrons. it depends on what atom ur talking about, some atoms (like magnesium) have 3 electron levels; when some atoms (like gold) may have over 7 levels of electrons. it sometimes has to do with the atomic number

What is classified as a hadrons?

Hadrons are composite particles made up of quarks, the building blocks of matter. They include protons and neutrons, the most common hadrons found in atomic nuclei. Other examples of hadrons include mesons, which consist of a quark and an antiquark.

Why is the neutron neutral?

The neutrality of the neutron is a matter of definition; since it behaves as uncharged, it is categorized as such. The definition could be attributed to extensive experimental observations which ultimately contributes to the current broad scientific consensus, and thus it is ultimately admitted to a Standard Model wherein its charge neutrality becomes canonical. This is the essence of the scientific process. However, this is not to say the causality behind lack of charge is therefore self-evident; charge is a property of matter, and if a particle lacks the property, one might ask, why does it lack that particular property?

In the case of the neutron, it is a composite particle made up of smaller fundamental particles, called quarks. Quarks themselves are the only particles in the Model assigned a fractional value of the fundamental charge; in the case of the neutron, two (down) quarks with charges of negative one third are bound in a trio with a third (up) quark of positive two thirds; the sum of the three equals zero (2/3 - 1/3 - 1/3 = 0), and thus the neutron exhibits overall electrical neutrality, or zero charge.

What combination of subatomic particles makes up an electron?

An electron is a fundamental particle that consists of three smaller particles: two down quarks and one up quark, held together by the electromagnetic force.

Which fundamental force keeps the nucleus of an atom from breaking apart?

Excellent question! I assume you are familiar with the electric repulsion that would make the protons repel (they both have a +1 charge). So, there are four forces in the universe:

1. Gravity-This is actually the weakest force. Think about it. It takes something as big as the earth to hold down a truck. Now think about the size of an electromagnet at a junk yard that can pick it up!

2. Weak Nuclear force-this is what causes radioactive chemicals (like Uranium) to decay (what makes them "radioactive".)

3. Electromagnetism-you are obviously familiar with this one.

4. The Strong Nuclear Force-this is the answer to you question.

The strong nuclear force, or "strong force", binds protons and nuetrons together. If that satisfies your curiosity, stop here, cause further explaination can get ugly.

Well, ok, I here's how to explain it without getting too side tracked:

Protons and nuetrons stay together because they emit and exchange small particles called pions. This exchange process creates a very "stable" existence for them. Everything in physics wants to reach a "stable" point (or equilibrium). If you drop a pendulum, it will swing back and forth reaching a stable pattern. Just like this, this cycle of exchanging pions is a very stable state of being for the protons and neutrons They become dependent on the process and this attraction is even stronger than the electromagnetic repulsion between the protons. In fact, it is the stongest force in nature!

What is the antimatter equivalent of a proton?

The antimatter equivalent of a proton is an antiproton. It has the same mass as a proton but opposite charge.