Photons don’t generate electric field. Photons are electric field, or more precisely electromagnetic field. In classical physics we tend to describe quantities in terms of fields, which are entities that span over the whole spatial dimensions and contain information at each point in space.
Is the photon field the same as the electromagnetic field?
The photon (Greek: φῶς, phōs, light) is a type of elementary particle. It is the quantum of the electromagnetic field including electromagnetic radiation such as light and radio waves, and the force carrier for the electromagnetic force.
What produces electric field?
The electric field is produced by stationary charges, and the magnetic field by moving charges (currents); these two are often described as the sources of the field. … The force created by the electric field is much stronger than the force created by the magnetic field.
What do photons produce?
Photons can produce shock waves in water or air, similar to sonic booms. Nothing can travel faster than the speed of light in a vacuum. However, light slows down in air, water, glass and other materials as photons interact with atoms, which has some interesting consequences.
Are electrons a field?
In QFT, including QED, the electron is a field, which describes the electron’s interactions in a four-dimensional space-time by exchanging photons with itself or with other particle-fields, most notably the positron.
What is field and its quantization of field?
The quantization of the electromagnetic field, means that an electromagnetic field consists of discrete energy parcels, photons. … In Dirac’s theory the fields are quantized for the first time and it is also the first time that Planck’s constant enters the expressions.
Can electric field be negative?
Electric field is not negative. It is a vector and thus has negative and positive directions. An electron being negatively charged experiences a force against the direction of the field. For a positive charge, the force is along the field.
What is the symbol for electric field?
Symbols for physical quantities and their international units
|E, E||electric field||N/C, V/m|
|ΦE||electric flux||N m2/C, V m|
|U, UE||potential energy, electric potential energy||J|
|V, VE||voltage, potential, electric potential||V|
Where is electric field strongest?
The field is strongest where the lines are most closely spaced. The electric field lines converge toward charge 1 and away from 2, which means charge 1 is negative and charge 2 is positive.
Can photons be created?
A sodium vapor light energizes sodium atoms to generate photons. A sodium atom has 11 electrons, and because of the way they’re stacked in orbitals one of those electrons is most likely to accept and emit energy.
Why photon has no mass?
The answer is then definitely “no”: the photon is a massless particle. … Even before it was known that light is composed of photons, it was known that light carries momentum and will exert pressure on a surface. This is not evidence that it has mass since momentum can exist without mass.
Can a free electron emit a photon?
it is true that a free electron cant emit or absorb a photon but it is misleading to think that a free electron is totally unaffected by the passage of a light wave. the electron will indeed oscillate but it will always emit exactly the amount of energy that it absorbs. the ‘net’ effect is that it is unaffected.