RGB nanometer values?

Does anybody know what are the standardized
nanometer values for red, green, blue for
TVs, computer monitors, etc...

Also when lets say we have 20%/100% red, 50%/100% blue
and 10%/100% green how do I compute what that
color nanometer value is?

Correct me if I am wrong here:

Yellow generated by TV or monitor analysed
by a spectrometer or a prism would yield
red and green components.

But if we had true yellow light source (580 nanometers)
spectrometer or a prism would yield yellow?

(Sorry that this post is not strictly electronics
but it's all electromagnetism right?)

1) I don't know the wavelengths for the colours used on a TV screen, have you tried Wikipeida?

2) Yes, of course the spectrum will consist of red and green, not yellow when a light from a yellow pixel on a screen is analysed.

Look up RGB model and colour vision - there's nothing special about the wavelengths for red, green and blue, they're just the pass bands for the cone cells on the human retina.