Do electromagnetic waves have mass? What are electromagnetic waves called?

Electromagnetic waves have mass, of course, if they are moving.

Light has only one velocity in a medium, and it has mass only when this velocity is reached, and if it is not reached, it has no mass.

For example, in visible light waves, photons have mass when they are in motion and no mass when they are at rest.

Waves are not matter, and they are not matter where mass comes from.

At present, it is theorized that any matter has mass, and electromagnetic waves also have mass, but there is no way to measure it, which belongs to unknown science.

No, he propagated in the form of waves, how could he have mass.

Electromagnetic wave. An electromagnetic wave is a wave of energy propagation produced by the interaction of an electric and magnetic field. These fluctuations can propagate in a vacuum or through media such as air, water, solids, etc.

Electromagnetic waves have a wide range of frequencies, including radio, microwave, infrared, visible, ultraviolet, X-ray, and gamma rays.

Electromagnetic waves can be generated by a magnetic field generated by an electric current or an electric field generated by a changing magnetic field. In radio technology, electromagnetic waves are usually generated through antennas. Electromagnetic waves are used in a wide range of applications, including communications, radar, medical imaging, energy transmission, and more.

In our daily lives, we often use the application of electromagnetic waves. For example, the mobile phones and Wi-Fi routers we use use to communicate. In the medical field, technologies such as X-rays and magnetic resonance imaging are also based on the principle of electromagnetic waves.

In addition, electromagnetic waves also have a wide range of applications in fields such as physics and astronomy. For example, by detecting the frequency and intensity of electromagnetic waves, astronomers can study celestial bodies and matter in the universe.

In conclusion, electromagnetic waves are an important way of energy propagation and have a wide range of applications in our lives and scientific research. With the continuous development of technology, the application of electromagnetic waves is also expanding and deepening.

Not massive. Only with equivalent quality. The mass converted according to the mass-energy formula is not a real mass, but only an equivalent mass.

Just an equivalent numeric value, but not a true mass property. Mass in the true sense of physics is mass at rest. Static mass and equivalent mass, completely different.

The rest mass is a relativistic invariant that does not change in any 3-dimensional frame of reference. However, the equivalent mass (also called dynamic mass) of energy equivalence is not a relativistic invariant. It can be seen that these two qualities are actually very different, and the physical meaning is completely different.

It is called equivalent mass, and the concept is more accurate, but it is just an equivalent value, which has no substantive physical significance. Called kinetic mass, the concept is easily confused, and this name is not a good name for physics. Electromagnetic waves have energy and momentum, which are real physical properties, not equivalent.

In modern physics, there is equivalence everywhere, but in fact, it is only numerical equivalence, and the physical connotation is completely different. If you really think of equivalence as the same, you can't understand modern physics at all. It is impossible to distinguish the true physical meaning of equivalence, and it is impossible to understand modern physics.

For electromagnetic waves, momentum and energy are what make sense, although we can define their "mass". Here I will explain, I hope it will help the subject understand. Since I am also a layman, if there is any mistake, I would like to correct it.

Due to the wave-particle duality of light, light (electromagnetic waves) has energy and momentum. Its momentum can be expressed as p=h, where denotes the wavelength of the electromagnetic wave, and h is Planck's constant. In X-ray scattering, there is a phenomenon of wavelength change, which can be considered as a change in momentum during the collision, which is the Compton effect.

Knowing the momentum of an electromagnetic wave, it is natural to get its mass m=h c. However, since c is a constant, a change in the amount of electromagnetic fluctuations can be seen as a change in "mass", which is wavelength-dependent. So, in a sense, this "quality" cannot be considered quality in the classical sense.

For fields and electromagnetic waves, momentum and energy are of practical significance, and although we can define their mass, they don't seem to be of much use. <>

Electromagnetic wave. It's substance. Therefore, the physical entities that can be detected by us through the probe should be matter.

However, matter does not necessarily have mass, and whether mass is zero or not is not necessarily related to matter. Energy needs to be carried by matter, so I think there is something wrong with the way the question is asked. Free electromagnetic field.

The mass of the photon is zero, and adding a mass term to the Rallais will destroy the normative invariance of the equation. However, sometimes the condition of the canonical invariance of the equation is too strong, and it is only necessary that the final physical result is canonical invariant, so that the physical mass can be added in some cases and the result is correct. However, even if the electromagnetic field equation of free spin=1 solves the energy of the equation can be non-zero.

For e=mc 2, it must also be correct. <>

For example, when people calculate a black hole and add an electric charge to the Schwarzschild black hole, there is an electromagnetic field outside the black hole, and this electromagnetic field has a t 0 0 component of the non-zero energy-momentum tensor, and according to Einstein's equations, the measure outside the Schwarzschild black hole changes to become a Reissner Nordstr M black hole. The energy density of the electromagnetic field changes the measurement, and it is not unreasonable to call t 0 0 the mass density of the electromagnetic field according to "matter tells space-time how to bend". As for why the photon mass is 0, that is the background field method of field theory.

There is already a classical electromagnetic field in space-time, plus a quantized electromagnetic field, one, the quantized electromagnetic field still has no mass term, and this field is a photon. There is no contradiction between the energy expectation of the background field being positive and the photon mass being 0. <>

If there is mass, it will be due to gravity. There is no gravitational force in the electromagnetic field, so there is no mass. But here we mean that there is no resting mass.

Once it moves, it is an electromagnetic wave, and it still has a moving mass, which is often referred to as light pressure. On the other hand, if the electromagnetic field has mass, then light also has a mass at rest, and according to the theory of relativity, will it propagate at the speed of light?

So photons have no rest mass.

Electromagnetic fields have electromagnetic mass, but since mass is not well understood at the moment, some people think that all mass can be explained by electromagnetic mass. It is also believed that the mass of an object includes both electromagnetic and non-electromagnetic parts. The calculation of electromagnetic mass is to find the energy of the electromagnetic field and then use the mass-energy equation to obtain it.

Electromagnetic field is an intrinsically related and interdependent unity and general term for electric and magnetic fields. An electric field that varies with time produces a magnetic field.

The magnetic field that changes with time produces an electric field, and the two are causal to each other to form an electromagnetic field. Electromagnetic fields can be caused by charged particles moving at variable speeds, or by electric currents that vary in intensity, and regardless of the cause, electromagnetic fields always propagate at the speed of light to form electromagnetic waves. The electromagnetic field is the medium of electromagnetic action, has energy and momentum, and is a form of matter being.

The properties and characteristics of the electromagnetic field and the law of its motion are determined by Maxwell's equations.

Electromagnetic waves are a form of motion in an electromagnetic field.

In the case of high-frequency electromagnetic oscillations, part of the energy propagates from space in a radiation manner, and the general term for radio and magnetic waves is called "electromagnetic waves". In low-frequency electrical oscillations, the mutual changes between magnetism and electricity are relatively slow, and almost all of their energy is returned to the original circuit without energy radiating out. However, in high-frequency electrical oscillations, the magnetoelectric interchange is very fast, and it is impossible for all the energy to be reversed back to the original oscillation circuit, so electrical energy and magnetic energy propagate to space in the form of electromagnetic waves with the periodic changes of the electric field and the magnetic field.

What are electromagnetic waves, what are electromagnetic fields and electromagnetic waves.

Electromagnetic waves: It is the electromagnetic waves that are stirred up around the rapidly changing electric current, and they must change rapidly, and there will be no electromagnetic waves without changes.

Electromagnetic field: A magnetic field exists around an energized conductor, and when the direction of the current changes, the direction of the two stages of the magnetic field also changes.