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what do you mean pls explain ?Unless the mixing is done in a non-linear medium the mix will remain just that...a mix with the frequencies unchanged.
Visible light must follow some mathematical formula to add two colours to make other colours.https://en.wikipedia.org/wiki/Optical_heterodyne_detection
We can't measure it the same as RF or acoustical heterodyning because the wavelengths are so small, but it follows the exact same laws, detection is the pain in the rear part. The details are way of my head, but then again that's why it's a field being actively studied.
Let me make it clear - if i have 2 light waves 1st light -200THz and 2nd light-300THz .. now we mix them up what would be the resultant frequencyI think you are mixing two different principles here. One is heterodyning as mentioned above and refers generating sum and difference frequencies.
The other (post#5) is our perception of color based on the differential excitation of the cones in our eyes. Check: https://en.wikipedia.org/wiki/Color_perception . It might also be worth searching on "color blindness."
John
Let me make it clear - if i have 2 light waves 1st light -200THz and 2nd light-300THz .. now we mix them up what would be the resultant frequency
In that case there is no medium involved so IMO there won't be any sum or difference frequency generation.I am mixing two lasers in Vaccum
so if i mix up Red and green Laser in vaccum then i wont get yellow light ?
that makes it clear.It is only your brain that will interpret the reception of red and green to produce yellow in your head.