What is the difference between energy of a photon and energy of electron?

When dealing with “particles” such as photons or electrons, a commonly used unit of energy is the electron-volt (eV) rather than the joule (J). An electron volt is the energy required to raise an electron through 1 volt, thus a photon with an energy of 1 eV = 1.602 × 10-19 J.

Are photons matter or energy?

A photon particle does not have any mass (because you cannot “weigh” light), so it is not considered to be matter. Scientists call a particle of light a photon because it can carry and pass on energy like matter can, but it also sometimes acts like a wave, as light should.

Does a photon have energy?

Light is composed of photons, so we could ask if the photon has mass. The answer is then definitely “no”: the photon is a massless particle. According to theory it has energy and momentum but no mass, and this is confirmed by experiment to within strict limits.

What type of energy is a photon?

A photon is the quantum of electromagnetic radiation that describes the particle properties of an electromagnetic wave. The energy of a photon is given by the equation E = hf, where E is energy, h is Planck’s constant, and f is frequency.

What is the energy of 1 photon?

The energy of a single photon is: hν or = (h/2π)ω where h is Planck’s constant: 6.626 x 10-34 Joule-sec. One photon of visible light contains about 10-19 Joules (not much!) the number of photons per second in a beam.

Do photons have no energy?

Since photons (particles of light) have no mass, they must obey E = pc and therefore get all of their energy from their momentum. If a particle has no mass (m = 0) and is at rest (p = 0), then the total energy is zero (E = 0).

What is the difference between a photon and a particle?

Photons are the particle form of light. But upon striking objects, it acts as a particle. While “photon” is the name given to light only when it acts as a particle, people may neglect the distinction. They often use the term “photon” for light at all times, whether it’s in wave form or particle form.

How do I calculate the energy of a photon?

To find the energy of a photon, multiply Planck ‘s constant by the speed of light, then divide by the photon’s wavelength.

What kind of photon has the highest energy?

Light is electromagnetic radiation. Particles of light are called photons, and each photon carries a specific amount of energy depending on the type of light – measured by the frequency or wavelength of the light. The kind of light that has the highest energy photons are called – gamma rays.

What does the energy of a photon depend on?

Energy of a photon depend on its frequency. Frequency means number of oscillations per second. If energy of vibrating object is high then its vibration will increase. where h is a constant ( Planck ‘s constant, its value is 6.62*10^-34 Joules per Hertz).

Which has more energy per photon?

Quick Answer. Violet light has the most energy per photon of any visible color of light with a wavelength of about 400 nm. Ultraviolet light has an even smaller wavelength and as a result, more energy per photon, but it is invisible to the human eye.