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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

Is it true or false that a gamma ray is a very high-speed particle with no charge?

True. A gamma ray is a high-energy photon, and thus moves at the speed of light. And, like all photons, it has no charge.

Which microscope has the greatest magnification transmission microscope or scanning microscope?

Transmission electron microscopes (TEM) generally have greater magnification than scanning electron microscopes (SEM). TEM can achieve magnifications up to 1,000,000x, while SEM typically reaches up to 100,000x.

Is florine a electron acceptor?

Fluorine is not typically considered an electron acceptor because it is highly electronegative and tends to attract electrons rather than accept them. It is more commonly known for its role as an electron donor or sharer in chemical reactions.

Where are mesons found?

Mesons are found inside the atomic nucleus, along with protons and neutrons. They are subatomic particles made up of a quark and an antiquark, with a mass heavier than electrons but lighter than protons and neutrons. Mesons are involved in the strong nuclear force that holds the nucleus together.

What is emitted when a neutron decays into a proton?

A neutron in an atomic nucleus changes into a proton and an electron and an antineutrino. The electron is ejected from the nucleus and the antineutrino escapes, and that ejected electron is called a beta minus particle. Yes, it is still an electron, but the designation as a beta minus particle makes it clear where it came from - the result of the transformation of a neutron into a proton, that electron and the antineutrino (which carries off extra energy).

What are higgs boson particles?

The Higgs boson is a subatomic particle that is believed to give mass to other particles according to the Higgs mechanism in particle physics. It was first theorized in the 1960s and was experimentally confirmed in 2012 at the Large Hadron Collider. The discovery of the Higgs boson was a major breakthrough in understanding the fundamental forces and particles that make up the universe.

What is the large hadron collider a product of and used for?

The Large Hadron Collider is a product of collaboration between multiple countries and scientific institutions. It is used for conducting high-energy particle physics experiments to explore the fundamental structure of matter, search for new particles, and study the forces that govern the universe.

Define electron volt?

An electron volt (eV) is a unit of energy equal to the energy gained by an electron as it moves through a potential difference of one volt. It is commonly used in atomic and subatomic physics to describe the energy of particles at the atomic and molecular scale.

What are the chances of finding the Higgs boson?

A lot of high-power particle Physicists in the world believe that the chances are pretty good, otherwise CERN would not have pumped $10 billion and counting into the LHC so far.

A great deal of money has been invested in making these experiments possible, chiefly in hopes of observing the elusive Higgs particle, so scientists are very hopeful about it. But as always with experimental science, we shall have to see what the actual results are.

The protons of an atom attract electrons so why don't the electrons just fall into the nucleus?

The electrons don't fall into the nucleus because they spin around it with a minimum and determinate amount of energy, (or quanta, because it only assumes discrete values) wich stops them from falling into the nucleus, and most importantly, they don't have the behaviour of a classical particle defined by the classical mechanics principles in physics. So that's when quantum mechanics comes in to play: the electrons have a dual behaviour, that of a particle, and of a wave. Confusing? A little, but imagine, as a particle, you can go straight lines, curved lines, up, down, sideways, forwards, backwards and that's about it. Now just add to that behaviour, the wave function, which is like the vibration of a string from a guitar when you play it, it vibrates with a variable wave lenght, according to the characteristics of the string and the amount of strength used to play. I hope this might help, but you can find a lot of information in Wikipedia and all over the net about Quantum Physics. It may sound a lot confusing at first sight, but it is a wonderfull world worth checking, very small, with different laws, very different from ours. And also very important it seems, because the LHC (Large Hadron Collider) costed a fortune! Be curious ;)

If electrons have the most energy in an atom electrons in an electron cloud electrons in the outermost electron shell electrons in the innermost electron shell electrons in the nucleus?

Electrons in the outermost electron shell have the most energy in an atom. The energy of an electron increases as it moves further away from the nucleus. Electrons in the innermost shell have the least energy, while electrons in the nucleus have the highest energy due to their proximity to the protons.

Does oxygen have an excess or a deficiency of electrons?

Oxygen tends to gain two electrons to fill its outer shell, resulting in a deficiency of electrons.

Which scientific element has 76 electrons?

The element with 76 electrons is Osmium. It is a dense, rare metal that is commonly used in industry for its high hardness and resistance to corrosion.

Enzymes that catalyze removing electrons from one substrate and adding electrons to another are called?

Oxidoreductases. These enzymes facilitate redox reactions by transferring electrons from one molecule to another, either by oxidation (removing electrons) or reduction (adding electrons). Examples include dehydrogenases and oxidases.

What subatomic particles are found in side the necules?

Protons and neutrons are found inside the nucleus of an atom. Electrons orbit around the nucleus in energy levels.

What awards did paul daric win?

From Wikipedia:

Dirac shared the 1933 Nobel Prize for physics with Erwin Schrödinger "for the discovery of new productive forms of atomic theory". Dirac was also awarded the Royal Medal in 1939 and both the Copley Medal and the Max Planck Medal in 1952. He was elected a Fellow of the Royal Society in 1930, an Honorary Fellow of the American Physical Society in 1948, and an Honorary Fellow of the Institute of Physics, London in 1971. He received the inaugural J. Robert Oppenheimer Memorial Prize in 1969. Dirac became a member of the Order of Merit in 1973.

How many valence electrons does cl- have?

Cl- has 8 valence electrons. This is because chlorine, in its neutral state, has 7 valence electrons (group 17), and the -1 charge of the chloride ion indicates the addition of an extra electron.

Number of protons in silver nucleus?

There are 47 protons in Silver's atomic nucleus. The number of protons is the same as the atomic mumber.

A material that carries electrons easily is?

A material that carries electrons easily is called a conductor. Conductors have free electrons that are able to move through the material in response to an electric field, allowing for the flow of electricity. Metals like copper and aluminum are common conductors due to their high conductivity properties.

What does the combination of particles determine?

The combination of particles determines the properties and behavior of substances. Different types and arrangements of particles lead to different physical and chemical characteristics, such as color, density, melting point, and reactivity.

How can quarks change flavors when they are elementary?

"Elementary" in this context means that they are not known to be made up of smaller particles. It doesn't mean they can't undergo changes. You can think of the flavors as different excitation states of the same particle - comparable to different vibration modes on the same string. In fact, according to string theory (which is not really a scientific theory yet - more a hypothesis), the fundamental structures in the Universe ARE a type of string, and the different vibration modes of those strings are what gives them their different properties.

In the late 1800s experiments using cathode ray tubes led to the discovery of the electrons?

Yes, experiments with cathode ray tubes in the late 1800s, particularly by scientists like J.J. Thomson, led to the discovery of electrons. Thomson's experiments demonstrated that cathode rays were composed of negatively charged particles, which were later named electrons. This discovery laid the foundation for modern atomic theory.

Charge-to-mass ratio of an electron?

The charge-to-mass ratio of an electron is approximately 1.76 x 10^11 coulombs per kilogram. This value is a fundamental characteristic of electrons and is used in various physics applications, such as in particle accelerators.