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Photons have no invariant mass (the hypothetical mass they would have if they weren't moving, which cannot happen). So in that sense, light is massless.
However, light (and individual photons) have energy, and we know from Einstein's famous formula that energy is related to mass. (A different formula E=hv relates energy to frequency, so we can even calculate the precise equivalent mass for any given wavelength of light). In this sense, light has mass, and this can be shown by gravitational lensing, where a large enough concentration of mass can actually bend the path of light ... precisely as would be expected if light had mass.
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Does a photon have electrons?
No. A photon is a particle of light. It is massless.
What are massless particles traveling the speed of light?
photons
Is light and sound matter?
no light and sound is energy not matter because it is the massless partical.
What moves as fast as light?
All electromagnetic radiation or massless particles are capable of moving as fast as light.
What are some examples of mass in science?
Light, heat, energy, emotions. All are massless.
When a beam of light is falling on prism surface and bend then which force is apply on its corner?
The trick behind this is that light is photons, which are massless.
Is light matter?
No, light is not an example of matter. It is an example of electromagnetic waves. However, it is considered that light is composed of photons (massless particles) as well as waves by quantum physics.
Optical lever uses a light beam as a pointer to measure small deflectionsExplain the advantage of this?
It is massless and it is not affected by gravity.
Is light an example of matter?
No, light is not an example of matter. It is an example of electromagnetic waves. However, it is considered that light is composed of photons (massless particles) and it is applied to it some theories of matter.
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 can travel at speed of light?
Any massless "thing" like a photon and MAYBE a neutrino. NOTHING with mass can travel at the speed of light. Photons travel at the speed of light. The entire electromagnetic spectrum travels at the speed of light.
What is the difference between speed and light?
Speed is how fast something moves. Light is a form of energy carried by massless photons, these photons move at the speed of light, which is the fastest speed that anything in the universe can travel.
