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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.
What else can I help you with?
Does a photon have electrons?
No. A photon is a particle of light. It is massless.
What is the momentum of a massless particle and how does it affect its behavior in a physical system?
The momentum of a massless particle is always equal to its energy divided by the speed of light. In a physical system, a massless particle with momentum can travel at the speed of light and its behavior is not affected by inertia or resistance to motion.
What are massless particles traveling the speed of light?
Massless particles traveling at the speed of light include photons, the particles of light. They have no rest mass and always move at the speed of light in a vacuum according to the theory of special relativity.
Does light have mass?
No, light does not have mass. It is made up of particles called photons, which are massless.
What is a particle without mass and what are its properties?
A particle without mass is called a massless particle. Massless particles travel at the speed of light and do not experience gravitational forces. They have energy and momentum, but no rest mass. Examples of massless particles include photons (particles of light) and gluons (particles that mediate the strong nuclear force).
What is the significance of momentum for a massless particle?
The significance of momentum for a massless particle is that it determines the particle's energy and direction of motion. Since a massless particle always travels at the speed of light, its momentum is directly proportional to its energy. Momentum is crucial for understanding how massless particles, such as photons, interact with other particles and fields in physics.
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.
Does light have mass?
No, light does not have mass. It is composed of particles called photons, which are massless and travel at the speed of light in a vacuum.
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.
Who discovered that light has mass?
Light does not have mass. It is a form of energy.
