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Well, the energy of each photon is (Planck's Konstant 'h') times (frequency 'f'),
and it's also [ KE = 1/2 m V2 ].
But V = speed of light = c .
Set the two expressions for energy equal.
h f = 1/2 m c2
Multiply each side by 2:
2 h f = m c2
Divide each side by c2, and you have the mass of one photon:
m = 2 h f / c2
This bothers us, because of you go two equations back, you have, as we said,
2 h f = m c2 .
The [ 2 h f ] on the left side is double the energy of the photon. But if there's one
thing that everybody knows about Relativity, it's the fact that [mc2=E], not 2E.
This is a problem about which we don't really feel like worrying right now.
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What type of mass is light?
Light does not have mass. It consists of electromagnetic waves that do not possess rest mass.
What has no mass?
Light has no mass. It is composed of photons, which are particles that do not have any mass.
Does light from a flashlight have mass?
No, light does not have mass. Light is composed of particles called photons, which have no rest mass, but they do have momentum and energy.
Who discovered that light has mass?
Light does not have mass. It was through experiments and theories in physics that it was established that light, being composed of massless particles called photons, does not have mass.
How do you calculate the mass of light?
light has zero mass. Photons have zero mass. So according to e=mc2 light must also have zero energy. Astonishing how all these photons reach us from all the way across the universe! But all physical things have mass
What type of mass is light?
Light does not have mass. It consists of electromagnetic waves that do not possess rest mass.
What has no mass?
Light has no mass. It is composed of photons, which are particles that do not have any mass.
Does light from a flashlight have mass?
No, light does not have mass. Light is composed of particles called photons, which have no rest mass, but they do have momentum and energy.
Who discovered that light has mass?
Light does not have mass. It was through experiments and theories in physics that it was established that light, being composed of massless particles called photons, does not have mass.
Does light has mass?
yes, light has a mass that is what Albert Einstein said.
Why is lighting not matter?
Light hasn't mass.
Does light have mas but albert Einstein said that mass can be changed to energy and energy can be changed to mass so does light have mass?
Any energy - including light - has an associated mass.
What doesn't have a mass?
Light has no mass. That's why it is called "light" (Physics joke).
What is the mass of visible light?
Light is a type of energy.Energies do not have a mass or occupy space.
What is the mass of the body which travels in the speed of light?
The only thing that travels at the speed of light, is light. Light is also said to have no mass, therefore the only way for something to travel at the speed of light is for it to have no mass.
Is light mass or energy?
Um... yes? Light is a form of energy. Energy has mass.
If a mass travels at the speed of light does that mass turn into light energy?
No, a mass cannot travel at the speed of light according to Einstein's theory of relativity, as its mass would become infinite which is not physically possible. Photons are particles of light that always travel at the speed of light and have zero rest mass.
