Physical quantum mechanics, what is quantum mechanics physics

It is true that infrared photons have less energy than ultraviolet light, but ultraviolet light does not produce a lot of heat.

First of all, it can only be converted into heat after it can be absorbed by the object. In general, for example, crystals, the absorption of heat is mainly due to the thermal vibration (lattice wave) of crystal atoms; The wavelength of light absorbed by lattice vibration is in the infrared range, so infrared rays can be well absorbed, which can intensify the thermal movement of crystal atoms, thus generating large heat. Ultraviolet rays cannot be absorbed by crystals, so they generally do not generate heat.

On the other hand, heat is not equal to the whole energy. No matter how much energy absorbs light, if it is not converted into heat, we will not feel the temperature of the object increase. Therefore, even if some objects absorb ultraviolet rays, they cannot be completely converted into the thermal motion energy of atoms, so the heat generation is very small.

Note: Although ultraviolet light generates little heat, it has high photon energy, can break the chemical bonds of many substances, and can kill bacteria, etc., but this is not achieved by heating.

E = hv, v is the frequency, h is the constant, e is the energy, the infrared frequency is smaller than the ultraviolet frequency, so the energy infrared of a single photon is smaller than the ultraviolet light.

The amount of heat received by an object by light and several factors are light: the number of photons, the frequency of the photons, and the percentage of photons converted to heat.

Suppose there are two beams of light, which are ultraviolet light and infrared light, and each beam of light has the same photons, if all photons are converted into heat, then ultraviolet light must be more thermally hot than infrared light.

Summary. Kiss <>

The second ** teacher received it. The eigenvalue of the energy of the system is e n=- frace 1, and the wave function can be expressed as the radial wave function of the hydrogen atom (r, theta, phi)=r (r)y ( theta, phi), where e 1= frac$ is the energy of the hydrogen atom in the ground state.

Quantum mechanical.

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Quantum mechanics means quantum mechanics, which is a theory of physics, which is a branch of physics that studies the laws of motion of microscopic particles in the material world, mainly studying atoms, molecules, condensed matter, as well as the basic theory of the structure and properties of atomic nuclei and elementary particles. That's what quantum mechanics means.

Kiss <>

**The teacher received that the energy level of the linear potato harmonic oscillator is (n + frac) hbar omega-e, and the wave function is psi n(x)=a ne (x-x n) 2}, where the energy e and the angular frequency omega are determined by the physical parameters of the system.

Kiss [Big Red Sedan Rock], the second ** teacher received it. The eigenvalue of the energy of the system is e n=- frace 1, and the wave function can be expressed as the radial wave function (r, theta, phi)=r (r)y ( theta, phi), where e 1= frac$ is the energy of the hydrogen atom in the ground state.

Kiss <>

Expanding:,The third ** teacher received Oh, the first title is that light has wave-particle duality" means that light can exhibit both wave and particle properties. This concept originated from physicists' understanding of the nature of light.

The second title is 1Wave-particle duality: It is known that all matter can exhibit wave and particle properties, including photons, electrons, and proto-microscopic particles.

2.Bohr's model: There are energy levels when the electrons of an atom move around the nucleus, and the electrons can only jump between these energy levels, and the change in the energy of the transition corresponds to the emission and absorption of electromagnetic radiation.

This model is the starting point for modern quantum mechanics research.

Kiss <>

The fifth** received Oh, I can't draw it, only text is supported.

Then you type it out line by line.

Kiss <>

**The teacher received Oh, the energy eigenvalue is e=(n+ frac) hbar.

Kiss <>

Take a look at the above**Oh.

Can't see clearly. Kiss <>

It's very clear.

Quantum mechanics is the branch of physics that studies the laws of motion of microscopic particles in the material world.

Quantum mechanics (quantum mechanics), a theory of physics, is a branch of physics that studies the motion laws of microscopic particles in the material world, mainly studying the basic theory of atoms, molecules, condensed matter, as well as the structure and properties of atomic nuclei and elementary particles. Together with the theory of relativity, it forms the theoretical basis of modern physics. Quantum mechanics is not only one of the basic theories of modern physics, but also widely used in chemistry and other disciplines and many modern technologies.

At the end of the 19th century, it was discovered that the old classical theories could not explain microscopic systems, so through the efforts of physicists, quantum mechanics was created in the early 20th century to explain these phenomena. Quantum mechanics has fundamentally changed our understanding of the structure of matter and its interactions. With the exception of gravity, which is described by general relativity, all fundamental interactions to date can be described within the framework of quantum mechanics (quantum field theory).

A Brief History of the Discipline:

Quantum mechanics is the theory of describing microscopic matter, which, together with the theory of relativity, is considered to be the two fundamental pillars of modern physics, and many physical theories and sciences such as atomic physics, solid state physics, nuclear physics, and particle physics, as well as other related disciplines, are based on quantum mechanics.

Quantum mechanics is a physical theory that describes the atomic and subatomic scales. This theory was formed in the early 20th century and revolutionized people's understanding of the composition of matter. In the microcosm, particles are not billiard balls, but buzzing probabilistic clouds that do not exist in a single state, nor do they travel from point A to point B through a single path.

According to quantum theory, particles often behave like waves, and the "wave function" used to describe particle behavior is a possible property of a particle, such as its position and velocity, rather than deterministic properties. Some of the weird concepts in physics, such as the principle of entanglement and uncertainty, have their roots in quantum mechanics.

It's too early to answer the question of the applications of quantum mechanics, but if we really want to answer it, we can answer that the applications that we know so far, which the previous person has answered, are like in 1860 when you asked what the application of electromagnetism was, but the "applications that we know so far" may be 1/10,000 of the future applications of quantum mechanics. Why? Because although quantum mechanics is not yet complete (unlike the theory of relativity), it is precisely these incompleteness that show the wonder of nature, implying that its development will have a subversive and shocking impact on human understanding of nature and the universe, and it is even possible to discover that the theory of relativity can be deduced by quantum mechanics one day.

As a simple example, think about the electron through the double-slit experiment, the quantum mechanical explanation is that an electron passes through both the left slit and the right slit, and the other explanation is that in one universe, the electron goes to the left slit, and in another universe, the electron goes to the right slit, and there are multiple universes around us---, or the universe is multi-dimensional, it may be 11 dimensions, and quantum tunneling, quantum entanglement, etc., all imply that the quantum follows very strange characteristics, that is, the particles are here for a while, and there for a while. The fundamental principle of the next level of the universe and the world lies in the development of quantum mechanics. Human beings will also be able to switch over time and space, achieve faster-than-light communication and motion--- moving less than the speed of light in different worlds, but our world looks like faster-than-light.

So, the most shocking event of the twentieth century, I think, was the discovery of quantum mechanics, not other things like the rise of China. It is recommended that you read this popular Internet ** "God Doesn't Roll Dice --- History of Quantum Mechanics".