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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.
24 Απρ 2022 · Electrons can transfer to a higher energy level by absorbing energy (usually in the form of a photon). However, the electron will eventually return to its ground state, releasing a photon in the process. Photons are the fundamental unit of electromagnetic radiation and are responsible for the phenomenon of light.
In this section we will discuss the energy level of the electron of a hydrogen atom, and how it changes as the electron undergoes transition. According to Bohr's theory, electrons of an atom revolve around the nucleus on certain orbits, or electron shells.
Formulas. Physics. Photon energy is directly proportional to frequency. [1] where. is energy (joules in the SI system) [2] is the Planck constant. is frequency [2] This equation is known as the Planck relation. Additionally, using equation f = c / λ, where. E is the photon's energy. λ is the photon's wavelength. c is the speed of light in vacuum.
Electrons in atoms and molecules can change (make transitions in) energy levels by emitting or absorbing a photon (of electromagnetic radiation), whose energy must be exactly equal to the energy difference between the two levels.
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.
• Photons travel some considerable distance before undergoing a more “catastrophic” interaction leading to partial or total transfer of the photon energy to electron energy. • These electrons will ultimately deposit their energy in the medium. • Photons are far more penetrating than charged particles of similar energy.
