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C. Dopplebock
If one can mix certain colors of the visible spectrum to produce other colors, is it possible to mix frequencies from other parts of the electromagnetic spectrum to produce visible colors?
Originally posted by AlainLavoie
Well our retina respond to a range of frequencies of EM radiation. In principle, couldn't we re-construct a frequency in the visual range with frequencies outside of that range using Fourier Synthesis? Of course using high energy radiation would cause cell damage but ignoring this detail, I don't see why this wouldn't work...
Anyone?
Originally posted by C. Dopplebock
If one can mix certain colors of the visible spectrum to produce other colors, is it possible to mix frequencies from other parts of the electromagnetic spectrum to produce visible colors?
Originally posted by Doctor Luz
Two waves in the electromagnetic spectrum with different frequencies do not generate a wave with frequency the sum of they both. Waves with different frequencies do not interact between them.
The colors depends only on the brain interpretation, as said mathman.
The fact that a sum of stimuls (different wavelenghts) generates certain colors is only physiological.
Really the peak of sensibility of the eye is at 555 nm in photopic vision( this is when the vision is centered in the phovea, where the cone density is the most high), and at 510 nm with scotopic vision (at night for example).Originally posted by AlainLavoie
The three different types of cones in our retina have different absorption characteristics as a function of EM wavelength with peak absorptions in the Red, Green and Blue regions of the optical spectrum. The colors we perceive in an interpretation of the information coming to the brain from these three categories of stimulus. This I agree with.
Well, I think the eye can not perceive nothing out of its range of sensibility. (this is the visible light).
The question in contention can be reformulated as follow: Would a Cone Cell built to respond to a Redish frequency actually fire if stimulated by an EM wave composed of many frequencies that actually yields a red frequency at intereaction time with the cone?
I believe the answer is yes: EM waves form interferece patterns in the double-slit experiment so they DO interact constructively and destructively. As such, I think it's resonnable to assume that waves of different frequencies would locally (at cone location) interact and be "perceived" by the cone as the synthesized magnitude and frequency of all incident radiation.
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I'm no physicists but I believe you would model this in QM as the wavefuntion superposition of all incident photons. Remember that all energy transfer is quantized, and the quantum phenomena of interaction is interpreted as the notorious "collapse of the wavefunction" which is a superposition of all wavefunctions present in a specific spatial location, bearing in mind the uncertainty principle.
Unfortunately the quantum description of light is something slightly more complex than the sum of all incident photons.
Originally posted by Doctor Luz
Really the peak of sensibility of the eye is at 555 nm in photopic vision( this is when the vision is centered in the phovea, where the cone density is the most high), and at 510 nm with scotopic vision (at night for example).
I never heard about three types of cones. If you are thinking in the RGB system, this is only a system for color specification. (Not only the one)
Well, I think the eye can not perceive nothing out of its range of sensibility. (this is the visible light).
Leaving away some non-linear phenomena you need tree basic things to make two monochromatic waves to interact.
-They must have the same wavelenght.
-They must have the same plane of polarization
-They must be coherent.
The result will be a wave with the same wavelenght than the original.
Mixing electromagnetic frequencies is the process of combining two or more different frequencies of electromagnetic waves. This can occur naturally, such as in the Earth's atmosphere, or artificially, such as in radio or television broadcasting.
Mixing electromagnetic frequencies is essential for many technologies we use every day, such as wireless communication, satellite navigation, and medical imaging. It also plays a critical role in natural processes like photosynthesis and weather patterns.
There is currently no scientific evidence that mixing electromagnetic frequencies is harmful to human health. However, exposure to high levels of certain frequencies, such as those emitted by some electronic devices, can have negative effects. It is important to follow safety guidelines and regulations to minimize potential risks.
Scientists use a variety of tools and techniques to study mixing electromagnetic frequencies, including spectrometers, oscilloscopes, and computer simulations. They also conduct experiments in controlled environments and gather data from natural occurrences.
Mixing electromagnetic frequencies has the potential to revolutionize various fields, such as telecommunications, energy production, and healthcare. For example, scientists are exploring the use of mixed-frequency electromagnetic waves for wireless power transmission and targeted cancer treatments.