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The photon is only massless when it's at rest. But it's never at rest ... it's always
moving at the speed of light, and at that speed, it has mass.
How much mass ? Easy to calculate! (Maybe meaningless, but easy to calculate.)
We can easily find the energy of the photon, because it's simply
(frequency of the radiation) times (Planck's Konstant).
The photon's energy is all kinetic energy, which we know is [ 1/2 M V2 ], and 'V' is always ' c '.
So there you are! If you know the frequency (or wavelength) of the radiation, then the
mass of the photon practically falls right out, onto the floor. It's [ 2 h (freq)/c2 ] .
By the way, speaking of weird stuff, I skipped over the part along the way where
the photon's energy is all kinetic energy . . .
[ E = 1/2 M V2 ] but the photon's 'V' is always ' c ', so [ E = 1/2 M c2 ] . Does this
remind us of any other little equation we've seen before ? Except for that factor
of 1/2 , they're both the same equation. What is the connection, and what is
going on ? I have no idea.
What else can I help you with?
Is sunlight a material?
sunlight is a particle of energy called a photon. photons are massless and are not a material in the conventional sense.
Which is not the property of photon?
Photons are known to be chargeless massless... However, since they travell with reletivistic velocity, they gain mass.
Is that true that the more energy of a photon the bigger the mass it possesses?
No, all photons have the same mass. Photons are massless (i.e. zero). All the energy in a photon is in its momentum, but increasing its momentum does not change it speed which is always "the speed of light". All massless particles always move at the speed of light.
What is a antonym for photon?
One antonym for photon is "matter." Photons are massless particles of electromagnetic radiation, while matter consists of particles that have mass and occupy space.
is there anything lighter than photon?
No, photons are considered to be massless and travel at the speed of light, making them the lightest known particles.
Is alpha particle a type of photon?
No, an alpha particle is not a type of photon. Alpha particles are composed of two protons and two neutrons, while photons are massless particles of light.
Why the rest mass of photon is zero?
The rest mass of a photon is considered to be zero because photons are massless particles. They travel at the speed of light in a vacuum and do not possess rest mass. This is a fundamental property of photons in the Standard Model of particle physics.
Does a photon have electrons?
No. A photon is a particle of light. It is massless.
What is the particle of energy that makes up light called?
The particle of energy that makes up light is called a photon. Photons are massless, electrically neutral particles that carry electromagnetic radiation.
What is the mass of one photon?
mass of the proton is 0. Answer 2 But the question asked about photons, not protons. The mass of a photon is also 0, though the mass of a proton is not!
How long does a photon live?
Photons do not have a lifespan, as they are massless particles that do not decay over time. They exist until they are either absorbed by matter, reflected, or pass through space indefinitely.
Does gravity bents light?
Gravity will bend (influence) the path of photons (light). This effect is minimal: you would need A LOT of mass (like a black hole or a neutron star) and a very long distance for the photon to travel and to be measured to notice this effect. It is a little strange, as photons are considered to be massless, and should not be influenced by the mass (gravity) of another object. 1. Photons have energy; energy is mass (more or less); mass is affected by gravity. 2. Photons are probably affected by gravity, but you have to worry about refraction of light about a star. So, I think, the total angle is not due to gravity alone. Of course, maybe refraction is a gravity thing?
