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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 are the characteristics of the subatomic particles?
We generally think of protons, neutrons and electrons as the "building blocks of atoms" when we are in the world of the atom. There are fundamental particles smaller than these, but, in general, we usually focus on these atomic building blocks. There are other questions on WikiAnswers that speak to the characteristics of each of these particles, and you'll find links to each of them below. Use them to gather information.
Is the electric field caused by an electron weakest near the electron?
The electric field is stronger near the electron and becomes weaker as the distance from the electron increases.
How is a particle accelerator used to synthesize new elements?
they move atomic nuclei faster and faster until they have reached very high speeds
When two element form a covalent bond what do the electrons do?
A covalent bond is a form of chemical bonding that is characterized by the sharing of pairs ofelectrons between atoms, and other covalent bonds. In short, the stable balance of attractive and repulsive forces between atoms when they share electrons is known as covalent bonding.[1]
Covalent bonding includes many kinds of interaction, including σ-bonding, π-bonding, metal to metal bonding, agostic interactions, and three-center two-electron bonds.[2][3] The term covalent bond dates from 1939.[4] The prefix co- means jointly, associated in action, partnered to a lesser degree,etc.; thus a "co-valent bond", essentially, means that the atoms share "valence", such as is discussed in valence bond theory. In the molecule H2, the hydrogen atoms share the two electrons via covalent bonding. Covalency is greatest between atoms of similar electronegativities. Thus, covalent bonding does not necessarily require the two atoms be of the same elements, only that they be of comparable electronegativity. Although covalent bonding entails sharing of electrons, it is not necessarily delocalized. Furthermore, in contrast to electrostatic interactions ("ionic bonds") the strength of covalent bond depends on the angular relation between atoms in polyatomic molecules.
Does Top quark and Bottom quark make any stable particle in the universe?
Im afraid they dont, or to say it better the top quark does not make anything (yet). This is because of its very short lifetime (about 4.38*10^-25) which is too short to interact with a gluon and thus make a hadron.
We currently use anti-electrons (positrons) on a regular basis in the medical application we know as PET imaging. Additionally, we use anti-protons in nuclear research. The Large Hadron Collider runs with protons and antiprotons circulating in the acceleration ring (in opposite directions), and then "collided" in an experimental area packed with sensors and detectors.
It should be noted that matter and antimatter don't "like" each other. Any "contact" between the two leads to mutual annihilation. In the case of the positron, which is produced in beta plus decay, that positron will eventually "run into" an electron, and mass of the two particles will be entirely converted into energy. Links have been included for further investigation, and you'll find them below.
What year did Tim Berners-Lee spend at cern in Switzerland?
Tim Berners-Lee had his first contact with CERN 1980, when he acted there as advisory engineer from June to December. Later he worked as Director of a company for Computer Systems, but returned to CERN 1984.
1989 he invented the World Wide Web.
1994 Tim Berners-Lee founded the World Wider Web Consortium. He is owner of a professorship at the "Laboratory for Computer Science" of the MIT since 1999
What is the resulting nucleus if a tritium and a deuterium nuclei fuse?
Helium and a neutron:
D + T --> He + n + 17.59 MeV
Which type of energy requires the movement of electrons?
Electric energy requires the movement of electrons.
Actually 'an' up quark.
The weak nuclear force permits an interaction between an up quark and an electron that converts the up quark to a down quark and the electron ceases to exist, also an interaction between a down quark and a positron that converts the down quark to an up quark and the positron ceases to exist. There are also weak nuclear force interactions that change quark types by emitting electrons or positrons. Both the absorption and emission interactions described above are referred to as Beta Decay Processes. All Beta Decay Processes also involve emission of an electron neutrino or an electron antineutrino (the lightest known particle having a nonzero mass and a particle that has almost no interaction at all with other matter).
Do all electrons orbit the nucleus of an atom at the same level?
No, the electrons orbiting an atom have multiple levels.
What molecules supply electrons to an electron transport chain?
Glucose. Glucose is oxidized and oxygen is reduced here.
What is the difference between a positron and an electron?
An electron is the carrier of the negative electrostatic force, and it has a charge of -1. Also, the electron, along with the proton and neutron, are the "basic building blocks" of atoms, and they make up the matter all around us. The positron, on the other hand, is an anti-electron - it's antimatter! And it is the antiparticle of the electron. It has a charge of +1, which is just the opposite of the electron's. The fact that the electron and positron are matter and anti-matter, and that they have a charge of -1 and +1 respectively are the major differences. A positron is an electron's anti-particle, and when the electron and positron come in contact with each other to combine, they annihilate each other in a process called electron-positron annihilation. There is a link below to that related question and to a couple of others.
What does the electron gun do in a crt monitor?
electron gun just fires electrons with certain energy so that when the electrons strikes on the pixels of the screen then they glow up with certain color... this color is defined according to the energy of electron..i.e electrons with high energy will lit up blue &with low energy lit up red color.
energy=frequency*plank's constant(n)...
How mamy electrons are in Mercury?
Mercury's atomic number is 80. That means it has 80 protons, all of which have a +1 charge. To keep it electrically neutral then, it must also have 80 electrons.
Gamma-linoleic acid (GLA) is an omega-6 polyunsaturated fatty acid made in the body from linolenic acid, an essential fatty acid (EFA).
How many electrons are in 4.171023 atoms?
1) You can't have 4.171023 atoms -- you can't even have 4.1 atoms. Atoms are, by definition, indivisible. Thus, you can have 4 atoms or 5 atoms, but no number in between a positive whole number.
2) Even if you chose a whole number to ask about, such as
4.17 x 10^23
the number of electrons in that many atoms would depend on which type of atoms you are asking about. Most atoms in our Universe have only one electron, but some have over a hundred atoms.
What is looking for higgs Boson?
The two most prominent particle colliders that are looking for the Higgs boson are the Tevatron at FermiLab (although that one is going to close soon) and the LHC at CERN.
