M4TTYou should use a piece of yellow paper as the crosshair for the real yellow crosshair because your monitor doesn't actually show yellow, it's just a mixture of red, blue and green.
While it's true that monitors don't emit light that we would call yellow, I don't believe it's correct to call yellow paper any more yellow than yellow on a monitor. You don't have a single continuous receptor in your eye which can pinpoint wavelengths - your perception of colour is based on how strongly a number of distinct receptors (three main ones) called cones are triggered. Yellow paper will also reflect a large number of wavelengths of light, which are interpreted by your brain as being yellow.
I am aware that this was possibly bait.
[quote=M4TT]You should use a piece of yellow paper as the crosshair for the real yellow crosshair because your monitor doesn't actually show yellow, it's just a mixture of red, blue and green.[/quote]
While it's true that monitors don't emit light that we would call yellow, I don't believe it's correct to call yellow paper any more yellow than yellow on a monitor. You don't have a single continuous receptor in your eye which can pinpoint wavelengths - your perception of colour is based on how strongly a number of distinct receptors (three main ones) called cones are triggered. Yellow paper will also reflect a large number of wavelengths of light, which are interpreted by your brain as being yellow.
I am aware that this was possibly bait.