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When a metal surface is exposed to a monochromatic electromagnetic wave of sufficiently short wavelength (or equivalently, above a threshold frequency), the incident radiation is absorbed and the exposed surface emits electrons. This phenomenon is known as the photoelectric effect.
Explain the relationship between the energy of a photon in joules or electron volts and its wavelength or frequency. Calculate the number of photons per second emitted by a monochromatic source of specific wavelength and power.
29 Ιουλ 2024 · How to calculate the energy of a photon. Planck's photo energy equation is: \small E = \frac {hc} {\lambda} = hf E = λhc = hf. where: E E – Energy of a photon; h h – Planck constant; c c – Speed of light; λ λ – Wavelength of a photon; and. f f – Frequency of a photon.
A photon (from Ancient Greek φῶς, φωτός (phôs, phōtós) 'light') is an elementary particle that is a quantum of the electromagnetic field, including electromagnetic radiation such as light and radio waves, and the force carrier for the electromagnetic force. Photons are massless particles that always move at the speed of light ...
Photon energy is the energy carried by a single photon. The amount of energy is directly proportional to the photon's electromagnetic frequency and thus, equivalently, is inversely proportional to the wavelength. The higher the photon's frequency, the higher its energy.
A photon is a quantum of EM radiation. Its energy is given by E = hf and is related to the frequency f and wavelength λ size 12 {λ} {} of the radiation by. E = hf = hc λ (energy of a photon), size 12 {E = ital "hf"= { { ital "hc"} over {λ} } } {} 29.12.
5 ημέρες πριν · The energy of a photon can be calculated using the formula: Where: E = energy of a photon (J) h = Planck's constant (J s) f = frequency (Hz) Photon representation. A photon in a particle of light carrying discrete packets of energy. Using the wave equation , energy can also be equal to: Where: c = the speed of light (m s -1) λ = wavelength (m)
