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Quantum Mechanics

Quantum Mechanics is the branch of physics that deals with the study of the structure and behavior of atoms and molecules. It is primarily based on Max Planck's Quantum theory, which incorporates Heisenberg's uncertainly principle and the de Broglie wavelength to establish the wave-particle duality on which Schrodinger's equation is based.

916 Questions

What force fields would be felt by a stationary charged object?

A stationary charged object would experience an electric force field due to other charged objects in its vicinity. The strength of the force field would depend on the magnitude and distance of the other charged objects.

What is Fermionic repulsion pressure described by quantum mechanics?

Fermions are particles with half spin for example, electrons. Pauli's exclusion principle states that no more than two fermions can occupy the same energy state. from Quantum mechanics, electrons will also fill up all energy levels until the Fermi Energy. If you compress these electrons further, the total fermi energy of the system is increased (not the individual fermions) and work must be done to compress these fermions. As a consequence, the fermions exert an opposing pressure, called the fermionic repulsion pressure.

How do you go from a proton to the higgs boson?

since the proton-proton collision produce higgs bosons where was the higgs in the first place?

Why do we mostly use indirect semiconductors?

The indirect band gap semiconductors like silicon and germanium are mostly used because they are elemental, plentiful, and easier to process than the direct band gap semiconductors which are alloys or compounds.

What is a motor thermistor?

It is a device used to sense the temperature within the motor coils. There are usually three in a three phase motor, one for each coil. The output of the thermistor is used to hold an over temperature relay designed to be used with thermistors, in a closed position. The start circuit of the motor control is connected thriough this relay through N.C. contacts. If the motor goes into a over heat condition then the control relay drops out, the contacts of the relay open which in turn de-energizes the magnetic contactor and disconnects the motor from the supply voltage.

What is a wave function in quantum mechanics?

Wave function is a variable or oscillating quantity in both space and time whose variation gives position of particle in space at a certain time.It may be a magnetic or electric field in case of electromagnetic waves, or vertical distance of a rope from equillibrium postion etc_ By Choudhry Adeel Akram Foji

What band of freqency does the Photon work?

Photons can have any frequency: 0 Hz (0 eV) to infinite Hz (infinite eV).

What happens when photons collide?

when two photons collide:-

1.a new photon gets formed

2.its direction will be different from that of the two photons.

3.the energy of the photon will remain the same

What is a W state?

A W state is a quantum state of three cubits which represents a specific type of multipartite entanglement.

Why is the Higgs boson particle important?

It's important because it's the particle that gives everything mass (kinda like weight) in Physics. If this particle doesn't exist, it means that all of the science we have relied on so far in Physics, is wrong. This includes Einstein's General Theory of Relativity, or the greatest work Einstein is known for (E=mc2). That's why it's important.

Can string theory be proved?

Not with our level of technology, but the math is sound

How is the existence of the neutrino confirmed?

Actually, we can't even confirm the existence of atoms, let alone subatomic particles. But when scientists conduct experiments, they come to the conclusion that the particles are indeed valid. The more discrete physics becomes, the more theoretical it is.

Where do Bose Einstein Condensates occur naturally?

If gravastars exist, their event horizon would be surrounded by a thick layer of Bose-Einstein Condensate.

Does measuring the momentum of the electron around the nucleus cause it to behave as a particle and so the cloud disappears as shown in double slots experiment?

Well, the act of measuring an electron's momentum changes its position, rendering the measurement invalid. This is the Heisenberg Uncertainty Principle.

How do you calculate uncertainty?

There are several ways to calculate uncertainty. You can round a decimal place to the same place as an uncertainty, put the uncertainty in proper form, or calculate uncertainty from a measurement.

What does a hypercube look like?

That cannot be described as it is a 4D object. It can only be defined mathematically.

What is a weak boson?

A boson responsible for carrying the weak nuclear force (responsible for beta decay). There are three different kinds W-, Z0, and W+ all rather heavy and acting only over short ranges.

How is the spin of an elementary particle measured?

Spin is either up or down and in positive half integer multiples of an angular momentum quantum constant:

h/(2∏), where h is Planck's constant.

Does the string theory bridge the gap between Einstein's theory of relativity and quantum mechanics?

No, string theory is an attempt to bridge the gap between EVERYTHING, not just relativity and quantum, into one fundamental theory.

Give a concise account of Dirac's 'bra' and 'ket' vectors?

Any account of Dirac's bra-ket vectors depends critically on your understanding of vector spaces. Unfortunately, we have no idea as to how familiar you are with such concepts and cannot take on the task of educating you in vector spaces. I suggest you look at the Wikipedia article at https://en.wikipedia.org/wiki/Bra%E2%80%93ket_notation