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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

What has 4 neutrons is metallic and has 4 electrons?

Beryllium

The fourth element in the Periodic Table, Beryllium has four neutrons and electrons, but it doesn't necessarily have four protons. Beryllium is also a type of metal.

What subatomic particle have no electrical charge?

neutron has no electric charge.electron is negative whereas proton is positively charge.

What subatomic particle has the same mass as a proton?

No two subatomic particles have the exact same mass. The proton and the neutron, however, come close. Neutrons are heavier than protons by only 2.3 X 10-30 kg. (Neutron: 1.674927351 x 10-27, Proton: 1.672621777 x 10-27)

What are the subatomic particles found in the nucleus of the atom are?

The three subatomic particles found in an atom are the Protons, Neutrons, and Electrons. But the subatomic particles found in the nucleus of an atom are the Protons, and Neutrons. The Electrons surround the nucleus and take up most of the volume.

Why humans can not walk in solid wall?

The electromagnetic force between the electrons in the person's atoms and the electrons in the wall's atoms is greater than the force of a person pushing against it. The atoms in the wall are connected via their electrons with a certain amount of force; if the force applied to the wall exceeds this threshold, then the object acting on the wall will go through it.

Are hadrons neutrons?

No. A neutron is one of several types of hadron.

How do neutrinos differ from photon?

A photon is a unit of light and has a mass of 0 where is a Neutrino has a small but nonzero mass. Neutrino's are similar to electrons in most regards, except neutrino's have no charge. Where photon's travel at the speed of light neutrino's come close but do not.

What is electron configuration of Mg plus?

The electron configuration of magnesium is 1s2 2s2 2p6 3s2. Mg+ has one less electron (electrons have negative charge, so a positive charge is a lack of electrons) so you remove one from the outermost orbital: 1s2 2s2 2p6 3s1, or simply [Ne] 3s1.

Can neutrons touch other neutrons and can protons touch other protons?

When you say "touch," you are most likely seeing solid balls with a specific diameter, coming closer together than this diameter. Much like ball bearing stacked together.

Problem is, when analyzing protons in a nucleus, concepts like "diameter" and "distance between protons" become meaningless concepts. We can NOT say with any meaning what the "diameter" of a proton is -- we can only discuss the probability that one particle, at a specific distance from a proton, will interact with that proton. Worse, we also can NOT discuss with any meaning "where" a proton is located within a nucleus. At these distances, to say, "Proton 1 is here, and proton 2 is a distance of .5 fermis away," is a nonsensical statement. When we get within a nucleus, ordinary concepts of location and distance disappear.

Why can an electron not be accelerated by a cyclotron?

I think it is because they do not carry a charge. They are neutrons therefore they are neutrons. The LHC can accelerate protons because they carry a positive charge, for example. The LHC uses magnetic fields to accelerate particles, which will have no effect on neutrally charged particles.

Atom with more electrons than protons?

An atom with more electrons than protons has a Negative charge. This makes it not a atom but an Ion. A Negatively charged Ion is called a Anion (An-Ai-On) and a positive Ion is called a cation (Cat-ai-on).

What does CERN and how does it work?

CERN is an organisational headquaters of scientists, based in Switzerland, which houses a large hadron collider (the LHC). By smashing particles together at great speed, it's hoped that the LHC will be able to recreate the conditions present at the beginning of the universe (the big bang). The scientists are examining the microscopic collisions, which are created by shooting atoms around the huge tunnels of the LHC. Please also see this article for further easy to understand information about CERN: http://scientificinquiry.suite101.com/article.cfm/cern_the_big_bang_machine

What subatomic particles have a mass of 0?

The photon. This refers to the "rest mass"; since the photon has energy, it also has an associated mass. But the "rest mass" or "invariant mass" is zero.

The subatomic particle that is the cause of electricity?

The most common charge carrier in electricity is the electron. However there are special cases where other things act as charge carriers, but they are usually not subatomic particles:

  • In electrolytes the charge carriers are ions
  • In aqueous electrolytes it is possible for hydrogen ions (protons) to be charge carriers
  • In semiconductors the charge carriers can be either electrons or holes (virtual particles produced by electron gaps in valence band)

Does a proton have charge?

All we can say is that it is the nature of electrons to carry a negative charge, and for protons to carry a positive charge. The intrinsic cause of these charges is still not yet understood, and awaits the further development of sub-atomic physics models.

Where does the electron exist in a atom?

In the atomic model, the electrons exist in discrete orbitals or energy levels around the outside of the nucleus, sometimes referred to as shells, concentric to the nucleus. Rather than identifying a specific location for an electron in an atom at any given moment, they are often represented with a probability distribution resembling a cloud, indicating the likelihood they will be in a collection of given loci whose shape is determined by the orbital type: some are spherical, others are lobed or doughnut-shaped.

What subatomic particles comprise the nucleus?

The two Subatomic particles which are in the Nucleus of an Atom is the Up and Down quark. When we think about the Nucleus of an Atom it is made up with Neutrons and Protons. Both Neutrons and Protons are made up with Quarks (a type of Subatomic Particle) Neutrons have to Down quarks and one Up quark. Whilst Protons have two Up quarks and one Down quark. So we can see that the Nucleus of an Atom is not only made up but dependent on Up and Down quarks.

This should answer the Question.

What is a substance with 26 protons?

There is only one element with 26 protons and that's iron (Fe) or any isotope of iron

What describes protons?

Protons are positively charged particles found inside the nucleus of an atom. The number of protons in each atom is its atomic number. The name proton was given to the hydrogen nucleus by Ernest Rutherford in 1920.

What are quarks and electrons made up of?

There is no evidence of a smaller particle than the quarks and electrons and other fundamental particles, but there is a theory of smaller particles called "rishons". The theory states that there are T, V, t, and v rishons. The T and t rishons are antoparticles, the T's having an electric charge of +1/3, and the t's having -1/3. The v and V are antiparticles, but they are both neutral. (Again, this is only theory.)

What are the similarities between a proton and an electron?

SIMILARITIES:

1. They both have DNA as their genetic material.

2. They are both membrane bound.

3. They both have ribosomes .

4. They have similar basic metabolism .

5. They are both amazingly diverse in forms.

DIFFERENCES:

1. eukaryotes have a nucleus, while prokaryotes do not

2. eukaryotes have membrane-bound organelles, while prokaryotes do not. The organelles of eukaryotes allow them to exhibit much higher levels of intracellular division of labor than is possible in prokaryotic cells.

3. Eukaryotic cells are, on average, ten times the size of prokaryotic cells.

4. The DNA of eukaryotes is much more complex and therefore much more extnsive than the DNA of prokaryotes.

5. Prokaryotes have a cell wall composed of peptidoglycan, a single large polymer of amino acids and sugar . Many types of eukaryotic cells also have cell walls, but none made of peptidoglycan.

6. The DNA of prokaryotes floats freely around the cell; the DNA of eukaryotes is held within its nucleus and associated with histones (proteins)

7. Eukaryotes undergo mitosis; prokaryotes divide by binary fission (simple cell division)

How emission of electrons in vacuum tubes?

A heated metal in a vacuum with an electrical charge can emit electrons. The filament is the part of the tube that gets hot. Some tubes use electrons emitted from the filament. Others use the filament to heat a metal cathode, causing it to emit electrons. The electrons flow to a positively charged "plate" electrode through the vacuum.