yellow is a light with a dominant wavelength of roughly 570,590 nm!
That is interesting! What is a nanometer?
well im not sure, my specialty is in the color yellow, but i can tell you yellow is  a primary color in subtracted color systems. that is used in painting or color printing
What does it mean to be a primary color?
well in the rgb color model which we used to create colors on tv, yellow is a secondary color which is made by combining red and green at equal intensity. when i say primary color in that sentence i meant it is the primary color in subtractive color and not to be confused with our three primary colors rgb!
That is so interesting but very technical!
yes, colors are more technical than we think about. but about yellow, carotenoids give the yellow like color to fall leaves, corn, canaries, egg yolks, and more!
So it's the way the light bounces off are eyes basically?
the carotenoids absorb light energy and protect plants from photodamage, so yes, it helpds in deciding which colors to absorb and reflect.