Has an experiment like Schrodinger's cat been tried?
No, Schrödinger's cat is a thought experiment to illustrate the concept of quantum superposition. It has not been practically attempted due to ethical concerns and technological limitations in creating such a scenario where a cat could be in a superposition of alive and dead states.
How much energy required for J meson to melt?
J mesons are subatomic particles that do not experience a melting phase transition like larger particles or materials. As such, they do not require energy to melt as they do not solidify.
Why different materials have different colors?
Because every material has unique allowed energy levels, the electromagnetic radiation emitted from them, which is equal to the energy of the higher excited state minus the energy of the lower excited state (or ground state) are also going to be unique. Since color is based on an electromagnetic wave's frequency, which in turn is proportional to energy, these unique waves give unique colors.
What is special about the entropy in thermodynamic equilibrium compared to all statesof a system?
In thermodynamic equilibrium, the system's entropy is maximized, reaching a state of maximum disorder or randomness. This is unique compared to other states of the system where entropy may be increasing or decreasing as the system approaches equilibrium. At equilibrium, the system has reached a stable condition where the distribution of energy and molecules is uniform, making it a distinct state in terms of entropy.
Could quantum entanglement work to transport energy?
Quantum entanglement cannot be used to transport energy from one place to another. While entangled particles exhibit a strong correlation that allows for instantaneous changes in one particle to be reflected in the other, this correlation cannot convey energy or information faster than the speed of light. Transporting energy still requires physical processes and mechanisms.
The quantum theory of light unifies the particle theory of light (photons) and wave theory of light by treating light as both particles and waves. Photons are quantized packets of energy that exhibit particle-like behavior, while light waves exhibit wave-like behavior with properties such as interference and diffraction. Quantum theory provides a framework to understand the dual nature of light.
What is Expectation Value in quantum mechanics?
In probability theory, an "expectation value" is the average of all values of a measurable quantity that one would expect, if a measurement was repeated a large number of times on a given system. For example, for an unbiased coin, the expectation value for "heads" is half of all tosses.
Each measurable quantity of a quantum system has an operator that, when mathematically applied to the system, gives a value of that quantity for that system. The expectation value for that quantity, for a given quantum system, is the product of that operator on a given state of the system, times the probability of the system being in that state, integrated over all possible states of the system. A more formally stated example:
For a quantum state Ψ(x), where 'x' can vary from -∞ to ∞, and for which Q(x) is a measurable quantity, then the expectation value of Q(x) would be equal to
∫Ψ*(x)Ψ(x)Q(x)dx
integrated from x = -∞ to x = ∞
As an example, suppose we wanted the expectation value for the radial position of an electron in its '1S' state within a hydrogen atom. When doing the formal math, we find that this value exactly equals the Bohr Radius. In contrast to the Bohr Model of an atom, this expectration value does NOT state that this electron IS at this radius, only that an AVERAGE of all radial measurements of such an electron would be the Bohr Radius.
Why do entangled subatomic twin particles not involve conveying information faster than light?
Entangled subatomic particles do not involve conveying information faster than light because the act of measuring one particle's state instantaneously determines the state of the other particle, regardless of the distance between them. This correlation is a result of the shared quantum state between the particles at the time of entanglement, not a form of communication. The information remains random and cannot be controlled to send a message.
What is normalising a wave function?
A wave function is normalized by determining normalization constants such that both the value and first derivatives of each segment of the wave function match at their intersections.
If instead you meant renormalization, that is a different problem having to do with elimination of infinities in certain wave functions.
Nobody is really quite sure yet. The existence of the Higgs boson is predicted by the Standard Model of quantum mechanics, but nobody has yet been able to experimentally detect one, so a lot of the details of it are still unknown.
The Standard Model does not predict what mass the Higgs boson would have, so it could be anything, really, though it's generally assumed that its mass is somewhere between 115 and 180 GeV/c2, because if it is that will make all the equations we have work properly for pretty much all cases. It is possible, however, that we'll find out that it isn't in this range (or we may not ever be able to find one at all), in which case people may have to make some changes to our current theories to account for why it's different than we expected.
What is exchange degeneracy in quantum mechanics?
Exchange degeneracy in quantum mechanics refers to the phenomenon where multiple particles with the same properties (such as electrons in an atom) are indistinguishable from each other, leading to the degeneracy of energy levels. This occurs due to the symmetric nature of the wavefunctions describing the particles, which do not change if the particles are exchanged. Exchange degeneracy plays a crucial role in determining the structure and properties of atoms, molecules, and other quantum systems.
Why hydrogen has special significance in quantum mechanics?
Hydrogen is special in quantum mechanics because its simplest form, the hydrogen atom, is the only atom for which the Schrödinger equation can be solved analytically. This allows for detailed insight into the behavior of electrons in the atom, providing a fundamental understanding of quantum mechanics. Additionally, hydrogen plays a key role in the development of quantum theories and helps explain important phenomena such as emission spectra and energy levels in atoms.
By definition a massless particle has no rest mass therefore it can not take up any spacial volume. I think the confusion lies with calling something that is massless, a particle. This is because as soon as we hear particle we think "object" and objects have definite mass and volume. A photon is massless and sometimes people may refer to it as a particle of light. But in fact that is sort of a misnomer being that it really isn't a particle, though it has particle-like properties. If something is massless theorists have said that the object does not interact with the Higgs field, though gravitational effects are still felt by the photon, example: gravitational lensing.
Texting itself does not cause radiation. However, mobile phones emit low levels of radiation called radiofrequency (RF) radiation when sending and receiving texts. The risk of harmful effects from this radiation is considered to be low, but some people choose to use headphones or speakerphone mode to minimize exposure.
What is the formulae for quantity?
The formula for quantity can vary depending on the context. In general, quantity refers to the amount or number of something. It can be calculated using different formulas depending on the specific situation, such as the quantity of a substance in chemistry, the quantity of goods sold in business, or the quantity of items in a set.
Why can't there be probability density equal to 100 percent in an orbital?
The probability density cannot be greater than 100% because nothing exists with a higher probability, except colloquially. We can say that we have a 110% certainty of something but that is only meant to express how certain we are. Because in reality nothing can be more than 100% in terms of probability density.
What is a quantum personality change?
Quantum personality change is "when someone drastically changes his or her personality within an extremely short period of time For example, if someone dramatically altered his or her personality within a day or less, it would be a quantum personality change."
http://www.funnelbrain.com/c-1049-constitutes-quantum-personality-change.html
What is a quantum state and what is a quantum fluctuation?
A quantum state is exactly as it sounds. It is the state in which a system is prepared. For example, one could say they have a system of particles and at time, t=(some number), the particles are at position qi (qi is a generalized coordinate) and have a momentum, p=(some number). You then know the state of the system. There are other properties that can be know for a particle. You could create a system of particles with a particular angular momentum or spin, etcetera.
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A quantum fluctuation arises from Heisenberg's uncertainty principle which is \delta E times \delta t is greater than or equal to \hbar and it is defined as the temporary change in the amount of energy in a point of space. This temporary change of energy only happens on a small time scale and leads to a break in energy conservation which then leads to the creation of what are called virtual particles.
Why can't scientists see individuals electrons?
It's called quantom theory. Theoretically they are never in one place but everywhere at the same time.So its IMPOSSIBLE to track them down WITH TODAYS TECH. Also probably somthing to do with them being HUGELY small. Quantum Physics is way above me so i wont even try to explain it in more deatil but if your interested check it out.
Hope this helps!
Why you use some classical mechanics in quantum mechanics?
That has been a topic of much debate since th1900's. There has been no fully successful tying of the two branches of physics yet but, many proposed theories have made great leaps forward to the answer. For example quantum gravity theory and the string theory, the latter being the more current and relevant.
There are two areas in which the transition from quantum mechanics to classical mechanics is rather obvious: Statistical thermodynamics and wave-particle duality.
Answer2:
Classical and Quantum Mechanics merge in Quaternion Mechanics.
Quaternion Mechanics consists of Quaternion quantities like energy
W = -vh/r + cP where -vh/r is the scalar enrgy and cP=cmV is the vector energy.
Classical and Quantum Mechanics need Quaternion quantities. In general the potential energy -vh/r is a scalar aka a Boson and vector energy cP is a vector aka a Fermion. Bosons/Scalars have integer spin and Fermions/Vectors have 1/2 integer spin.
For the most part like Newtonian Physics use only scalars -mGM/r a scalar and no vectors. Likewise, Quantum mechanics use mostly Fermions or Vectors and few scalars. The speed of light is a scalar as is Planck's Constant h.
Quaternion Mechanics merges Classical and Quantum Physics.
The Laws of Quaternion Mechanics are:
0 = XB = [d/dr, DEL] [B,B] = [dB/dr -DEL.B, dB/dr + DEL B ]
0 = X2B = [(d2/dr2 - DEL2), 2d/dr DEL] [-vh/r,cP]
This Quaternion Wave gives the
scalar/Boson wave -(d2/dr2 - DEL2)vh/r - 2d/dr DEL.cP =0
and the
vector/Fermion particle (d2/dr2 - DEL2)cP + 2d/dr DEL -vh/r =0
In Nature, Quaternions rule and Quaternions combine Bosons and Fermions.
A Quaternion can be a Boson or a Fermion or Both as in
X2W =[ -(d2/dr2 - DEL2)vh/r - 2d/dr DEL.cP,
(d2/dr2 - DEL2)cP + 2d/dr( DEL -vh/r + DELxcP) ]
Quaternions consist of Scalars and Vectors , Bosons and Fermions.
Discovery of particle theory of light?
The particle theory of light, which suggests that light is made up of small particles called photons, was first proposed by Albert Einstein in 1905 to explain the photoelectric effect. This theory revolutionized our understanding of light and helped to explain phenomena that the wave theory of light could not account for. Today, the particle-wave duality of light is a fundamental concept in quantum mechanics.
A quantum test typically refers to an experiment or evaluation conducted within the field of quantum physics to test theories or principles related to quantum mechanics. These tests often involve measuring the behavior of particles or energy at the quantum level to understand and verify the predictions of quantum theory.
Can atomic spectra be explained on the basis of quantum mechanics?
Yes, atomic spectra can be explained and understood through quantum mechanics. Quantum mechanics provides a framework to describe the discrete energy levels of electrons in atoms, leading to the observation of specific wavelengths in atomic spectra. The theory helps explain phenomena such as line spectra and transitions between energy levels within an atom.
What is a quantum state with zero spin in physics spelt S N L T?
A quantum state with zero spin in physics is called a singlet state. This means that the total angular momentum of the system is zero. This term is commonly used in the context of quantum mechanics to describe certain states of particles.
A quantum physicist is a scientist who studies the fundamental principles of quantum mechanics to understand the behavior of matter and energy at very small scales. They investigate phenomena such as superposition, entanglement, and quantum tunneling to advance our understanding of the nature of reality at the atomic and subatomic levels.