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In high school, doing modern physics, and was struck by a thought about light, energy of a photon and the "speed limit" of relativity. I'm probably. Yes, the intensity depends, in part, on the frequency. Intensity is power per unit area. Power is energy per time. For a photon, the energy is h ν. The greater the energy, the larger the frequency and the shorter (smaller) the wavelength. Given the relationship between wavelength and frequency — the higher the frequency, the shorter the wavelength — it Return to question list for Light.
A two-dimensional surface, such as a drumhead, also has quantized vibrations.
- The relationship between light, energy and relativity
- Intensity (physics)
Similarly, when the ends of a string are joined to form a circle, the only allowed vibrations are those with wavelength Equation 6. The standing wave could exist only if the circumference of the circle was an integral multiple of the wavelength such that the propagated waves were all in phase, thereby increasing the net amplitudes and causing constructive interference.
Otherwise, the propagated waves would be out of phase, resulting in a net decrease in amplitude and causing destructive interference.
Higher energy levels would have successively higher values of n with a corresponding number of nodes. Standing waves are often observed on rivers, reservoirs, ponds, and lakes when seismic waves from an earthquake travel through the area.
The waves are called seismic seiches, a term first used in when lake levels in England and Norway oscillated from side to side as a result of the Assam earthquake of in Tibet. They were first described in the Proceedings of the Royal Society in when they were seen in English harbors and ponds after a large earthquake in Lisbon, Portugal.
Seismic seiches were also observed in many places in North America after the Alaska earthquake of March 28, Those occurring in western reservoirs lasted for two hours or longer, and amplitudes reached as high as nearly 6 ft along the Gulf Coast.
Even if ignoring that you will find light to always show 'c' locally, when measured.
And if you want to discuss the whole spectrum use 'radiation' please. Leave hypothesizes outside the definitions, you might want to make a section called 'alternative hypothesizes' if you can't control those introducing 'pilotwaves', quantum teleportations, tunnelings, entanglements and whatever.
As Birge said "I understand what people are getting at when they want to say a photon can be expressed by a 3D k-vector and a polarization state, but nobody has offered a good explanation of why it's helpful to readers to consider the number of free parameters in a spatially infinite plane wave to be the degrees of freedom of a single photon.
A photon does not exist, except in the recoil, aka symmetry with SpaceTime, and in its subsequent annihilation. The ball can also be defined this way actually, if you consider what communicates its motion, namely 'light'.
But that would just mess with peoples heads. Concentrate on what we know, not what we guess. So there is a equivalence through that. And equivalences and symmetries are important phenomena in SpaceTime, but intensity and amplitude doesn't apply to a single photon at all. If you look at Maxwell's equations light becomes a electromagnetic radiation consisting of oscillations waves in the electric and magnetic fields, 'perpendicular' at a right angle to each other.
Intensity (physics) - Wikipedia
Waves describe polarization, refraction, interference quenching and reinforcing itself, via two waves interfering etc, but they do not tell you about photons. And that's where 'equivalences' becomes important. And so this, to me that is, is all about trying to find a common ground for the concept of photon fitting the concept of waves. This is a good description of that. The intensity of the beam is proportional to the number of photons. The polarization of light that is explained by Maxwell is related to the quantum-mechanical concept of spin.