29.3 Photon Energies and the Electromagnetic Spectrum lonizing Radiation A photon is a quantum of EM radiation. Its energy is given by E = hf and is related to the frequency f and wavelength 2 of the radiation by E = hf = hC (energy of a photon), (29.12) where E is the energy of a single photon and c is the speed of light. When working with small systems, energy in ev is often useful. Note that Planck's constant in these units is (29.13) 5 eV •s. Since many wavelengths are stated in nanometers (nm), it is also useful to know that h = 4.14x10-15 e hc = 1240 eV · nm. (29.14) These will make many calculations a little easier.
29.3 Photon Energies and the Electromagnetic Spectrum lonizing Radiation A photon is a quantum of EM radiation. Its energy is given by E = hf and is related to the frequency f and wavelength 2 of the radiation by E = hf = hC (energy of a photon), (29.12) where E is the energy of a single photon and c is the speed of light. When working with small systems, energy in ev is often useful. Note that Planck's constant in these units is (29.13) 5 eV •s. Since many wavelengths are stated in nanometers (nm), it is also useful to know that h = 4.14x10-15 e hc = 1240 eV · nm. (29.14) These will make many calculations a little easier.
29.3 Photon Energies and the Electromagnetic Spectrum lonizing Radiation A photon is a quantum of EM radiation. Its energy is given by E = hf and is related to the frequency f and wavelength 2 of the radiation by E = hf = hC (energy of a photon), (29.12) where E is the energy of a single photon and c is the speed of light. When working with small systems, energy in ev is often useful. Note that Planck's constant in these units is (29.13) 5 eV •s. Since many wavelengths are stated in nanometers (nm), it is also useful to know that h = 4.14x10-15 e hc = 1240 eV · nm. (29.14) These will make many calculations a little easier.
Photon Energies and the Electromagnetic Spectrum • 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.
Transcribed Image Text:29.3 Photon Energies and the Electromagnetic Spectrum
lonizing Radiation
A photon is a quantum of EM radiation. Its energy is given by E = hf and is related to the frequency f and wavelength 2 of
the radiation by
E = hf = hC (energy of a photon),
(29.12)
where E is the energy of a single photon and c is the speed of light. When working with small systems, energy in ev is often
useful. Note that Planck's constant in these units is
(29.13)
5 eV •s.
Since many wavelengths are stated in nanometers (nm), it is also useful to know that
h = 4.14x10-15 e
hc = 1240 eV · nm.
(29.14)
These will make many calculations a little easier.
Interaction between an electric field and a magnetic field.
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