Does a photon have mass.?

Answer 1

No.
In modern physics, the photon is the elementary particle responsible for electromagnetic phenomena. It mediates electromagnetic interactions and is the fundamental constituent of light (which is here taken to mean all forms of electromagnetic radiation). The photon has zero rest mass and, in empty space, travels at the speed of light; in the presence of matter, it can be slowed or even absorbed, transferring energy and momentum proportional to its frequency. The photon has both wave and particle properties, i.e., wave-particle duality.

Answer 2

A photon does not have mass. Any particle that can travel at the speed of light, which is something that a photon can do, must be massless

Answer 3

No, a photon has 0 mass, and right this is why. i will attempt to place it so trouble-free as available yet right here it is going: a photon is a boson. In particle physics bosons obey Bose-Einstein statistics which state that distinctive bosons can occupy the comparable quantum state as long as they have the comparable power. Bosons are distinctive from fermions because fermions stick to Fermi-Dirac statistics which states that for the time of trouble-free terms one fermion particle might occupy any given quantum state in spite of power. actual, bosons ca be in the comparable place on the comparable time, yet fermions won't be able to. subsequently it is concluded that bosons are stress donning debris and fermions are 'rely' debris, however on occasion the branch isn't as sparkling cut back. The boson relatives is cut up into 2 communities: the effort-free debris and the mesons. The trouble-free debris that have been noted are noted as gauge bosons and incorporate the photon (stress provider of the electromagnetic container), the W and Z bosons which mediate the vulnerable nuclear stress (they even have mass), and gluon (stress provider for the reliable nuclear stress). The photon and the gluon the two have 0 mass. Now, quantum gravity postulates the life of a graviton (stress provider of gravity) and quantum mechanics has predicted the life of the Higgs Boson that's area of the Higgs container that's what provides debris their mass.

Answer 4

Yes it does have a mass, and a photon's speed depends on the medium it travels through.

Answer 5

Yes AND no..! The photon has a tiny rest mass, but photons are never at rest.

Answer 6

Anything with any amount of mass travelling at the speed of light has, effectively, infinite mass. If photons had light, even the light from the dimmest of candles would blow your body into bits.

Fortunately, photons don't have any mass.

Answer 7

No it doesn't, although it does have energy and momentum. If the photon did have mass it would cause all kinds of problems in physics.

Answer 8

This question comes up in the context of wondering whether photons are really "massless," since, after all, they have nonzero energy and energy is equivalent to mass according to Einstein's equation E=mc2.

Answer 9

The photon is massless, has no electric charge and does not decay spontaneously in empty space. A photon has two possible polarization states and is described by three continuous parameters: the components of its wave vector, which determine its wavelength and its direction of propagation. Photons are emitted in many natural processes, e.g., when a charge is accelerated, when an atom or a nucleus jumps from a higher to lower energy level, or when a particle and its antiparticle are annihilated. Photons are absorbed in the time-reversed processes, e.g., in the production of particle–antiparticle pairs or in atomic or nuclear transitions to a higher energy level.

In modern physics, the photon is the elementary particle responsible for electromagnetic phenomena. It mediates electromagnetic interactions and is the fundamental constituent of all forms of electromagnetic radiation, that is, light. The photon has zero rest mass and, in empty space, travels at the speed of light; in the presence of matter, it can be slowed or even absorbed, transferring energy and momentum proportional to its frequency. The photon has both wave and particle properties; it exhibits wave-particle duality.

The modern concept of the photon was developed gradually (1905–1917) by Albert Einstein[1][2][3][4] to explain experimental observations that seemed anomalous by the classical wave model of light. In particular, the photon model captured the frequency dependence of light's energy and momentum, and explained the ability of matter and radiation to be in thermal equilibrium. Other physicists sought to explain these anomalous observations by semiclassical models, in which light is still described by Maxwell's equations but the material objects that emit and absorb light are quantized. Although these semiclassical models contributed to the development of quantum mechanics, experiments eventually proved Einstein's hypothesis that light itself is particulate.

The photon concept has led to many advances in experimental and theoretical physics, such as lasers, Bose–Einstein condensation, quantum field theory, and the probabilistic interpretation of quantum mechanics. According to the Standard Model of particle physics, photons are responsible for producing all electric and magnetic fields, and are themselves the product of requiring that physical laws have a certain symmetry at every point in spacetime. The intrinsic properties of photons — such as charge, mass and spin — are determined by the properties of this gauge symmetry. Photons have many applications in technology such as photochemistry, CCD cameras, medical imaging, high-resolution microscopy and measurements of molecular distances. Recently, photons have been studied as elements of quantum computers and for sophisticated applications in optical communication such as quantum cryptography.

Answer 10

Yes they do have a very small mass,
Just because it has a subatomic size does not mean its mass is equal to nothing.

The strongest support to suggest it does have mass occurs when it passes near strong gravitation fields, because of it small mass gravity can alter its path, if it had no mass it would not change direction.