From a physics perspective there isn’t a reason you can’t utilize other parts of the em spectrum for radio communication. Radio can be amplitude (AM) or frequency (FM) modulated, or now even digital. The same techniques can be applied to other bands. The different groups, radio, microwave, come from human categorization, as well as different engineering approaches related to technical limitations.

If we take too much energy from wind it will probably turn out to have negative consequences.

The energy output by a wind turbine has to come from somewhere. It is taking it from the wind.

I don’t see how a RYGB monitor is bad news.

How does one objectively measure color?

If color is in light then why do people see yellow from an RGB monitor when no yellow light is present? If color is a physical property of light how do we see color? Do the chemicals in our cones see/respond to color? How? How is color detected by chemicals in our eye transmitted to the brain? Does electricity also support color? If so, how?

I’m a physicist and no, color is not a physical property of light. Color is a subjective experience created by our mind in response to electrical signals from our eyes.

The color yellow subjectively exists. Like I said at the beginning, color is a product of the mind. Objectively, as in is it directly measurable, light has no color. Physics deals with objective measurements.

You can call it whatever you want but color isn’t a physical property of light. It is a construction of the mind. You claim a certain wavelength is yellow. A computer display can show a combination of red and green pixels that we perceive to be the same shade of yellow even though the original yellow wavelength isn’t present at all. Color isn’t from the light itself but from our mind.

Colors aren’t physical. There is no way to measure color. We can measure frequency, wavelength, or energy. So there isn’t any light that is yellow at all. There is light, or combinations of light, that we perceive to be yellow but that is simply a construction of the mind.

Colors don’t actually exist physically. They are a creation of the mind.

I know he can get the job, but can he do the job.