Monochromatic light of 500 nm is still within the human gamut of color but it is impossible to reconstruct using combinations of 3 monochromatic lights whose wavelengths are perceived by humans as red, blue, and green. Since our monitors do not emit RGB light as lasers, but rather also as a spectrum of light, this suggests that our monitors are not subject to constraints that are as strict as what is displayed here.
Monochromatic light of 500 nm is still within the human gamut of color but it is impossible to reconstruct using combinations of 3 monochromatic lights whose wavelengths are perceived by humans as red, blue, and green. Since our monitors do not emit RGB light as lasers, but rather also as a spectrum of light, this suggests that our monitors are not subject to constraints that are as strict as what is displayed here.