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Yes... and that mass would be Zero. Photons don't have mass.
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∙ 10y ago
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How is a light beam different to a laser beam?
Compared to regular light, a laser beam: * Is monochromatic. All the photons have the same frequency, and thus the same energy. * All the photons have the same phase.
Photons with the highest energy have?
highest frequency / shortest wavelength / same speed as all other photons.
What absorbs photons?
Matter absorbs photons. Electrons in quantized harmonized orbits of the same energy level as the photon absorp it.
How are matter and energy the same?
Energy and matter(mass) are not the same! Energy = mass x c^2 !
Why photons are electrically neutral?
They are only neutral' in the sense of having no charge - they do have an electrical field. If they had charge, they would also have rest mass, because the charge represents energy and energy and mass are the same thing. So they would not travel at the speed of light. At least classically, it is not possible to have a charged massless particle.
What is the difference between a homogenous and a heterogenous beam?
A homogenous beam contains photons of the same energy (monoenergetic)Because the photons all have the same energy, their interactions with materials (such as the absorber) are all the same resulting in uniform attenuation.Heterogenous beams contain photons of different energies.Because the photons have different energies, their interactions with materials (such as the absorber) are different resulting in non-uniform attenuation.
How is a light beam different to a laser beam?
Compared to regular light, a laser beam: * Is monochromatic. All the photons have the same frequency, and thus the same energy. * All the photons have the same phase.
What happens when photons collide?
when two photons collide:- 1.a new photon gets formed 2.its direction will be different from that of the two photons. 3.the energy of the photon will remain the same
Do photons have physical mass?
Photons have mass.Photons have momentum.Photons have energy.Photons are affected by a gravitation field and follow a curved path called a geodesic. (A geodesic is a straight line in curved space, so what you call curved depends on whether you are a geometer or if you are watching from a distance.)Photons have a gravitational field of their own which exerts an attractive force on other matter.Photons interact electromagnetically with matter and other photons.Energy of a photon equals Plank's constant times the frequency.Mass of a photon is equal to energy divided by the speed of light squared.Higher frequency photons have more energy and hence more mass and it is well known that sometimes the energy of a photon can be converted into a particle with mass (usually in pairs).Photons have zero "rest mass" but that is not the "mass" in E=mc2. It is not rest mass that determines momentum or energy or gravitational attraction.And, photons are never at rest.If you accelerate to "catch up" to a photon, the photon does not appear to slow down, but its frequency decreases and energy decreases, approaching zero (same as the "rest mass" as you approach the speed of light.All that is true, but it is also true that characterizing any of these in a proper theoretical framework will inherently involve quantum mechanics, special relativity and general relativity.Addendum:If the question is posed as to whether photons have "physical mass," one must ask for a definition of nonphysical mass. There is mass, just mass, and there is no circumventing "mass." It does not come in types or flavors or with provisos. Mass is mass. One more thing for the questioner:Photons are quanta of energy, photons are not matter. They have mass since energy has mass. Mass as a property of energy is no different than mass as a property of matter. [Great summary of photon properties above]
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.
Photons with the highest energy have?
highest frequency / shortest wavelength / same speed as all other photons.
What do 2 photons of the same frequency have in common?
Wavelength, energy, color (if visible).
How can particles be without mass?
All particles that move slower than the speed of light have a "rest mass" or "invariant mass" - and that means, almost all particles. One of the few particles that does NOT have a rest mass is the photon, since it moves at the speed of light. It does have energy, and therefore (by mass-energy equivalence) it also has mass, but this is not "rest mass" and is often not counted as mass.
What absorbs photons?
Matter absorbs photons. Electrons in quantized harmonized orbits of the same energy level as the photon absorp it.
What will happen to the photons in the following situations A photon has more than enough energy for an electron in an atom to jump from the ground state to an excited state.?
To answer this question, first we need to know what photons arToe to electrons when they occure at the same speed since one have mass and the other do not have. NOTE:PHOTONS ARE MASSLESS BUT ELECTRON HAS A MASS OF ABOUT 9.11X10 SQUARE 2.TO UNDERSTAND THIS FURTHER,PHOTONS HAS NO MASS, WHERE WOULD IT GAIN THE ENERGY FROM? SINCE ACCORDING TO EINSTEINS RELATIVITY, E=MC SQUARE. THAT IS MASS PRODUCES ENERGY.NOW, IF THE PHOTONS MOVES UP TO HIGHER STAGE, AND THEN FALLS BACK WHAT WILL HAPPEN? BECAUSE ACCORDING TO PLANCK IT WILL RELEASE ENERGY.SO SINCE PHOTON HAS NO MASS, IT IS NOT QUALIFIED TO PARTICIPATE ON QAUNTUM STATE OR IF ITS QUALIFIED,THEN WE KNOW THAT IT POSSESES SOME LITTLE IF NOT NEGLIGABLE MASS. MY MAIL:ceephily@yahoo.com
How are matter and energy the same?
Energy and matter(mass) are not the same! Energy = mass x c^2 !
Is it true that mass and energy repel each other Explain in details?
No. Mass and Energy are equivalent (E=mc2). The are different manifestations of one and the same thing.
