I'd consider my 5mW green about equal in visibility to the 200mW red.
holy cow I was expecting 75ish then I saw another members pic of 6 wavelengths together so I can believe it
holy cow I was expecting 75ish then I saw another members pic of 6 wavelengths together so I can believe it
My Walmart 5mw greenie is more visable then my 250mw andy_con red pen.
My Walmart 5mw greenie is more visable then my 250mw andy_con red pen.
I don't know why I didn't think of this earlier.
I just plugged the numbers into chroma.
200mw of 650nm red is equal to 24.185mw of 532nm green.
200mw of 635nm red is equal to 49.053mw of 532nm green.
There, now you know... exactly.
And for s&g's.. 1W of 445nm = 47.908mw of 532. 600mw of 405 = 3.1573mw of 532.
Chroma doesn't take rayleigh scattering into the equation, so those numbers are off.
Grix said:Chroma doesn't take rayleigh scattering into the equation, so those numbers are off.
A feature of Rayleigh's theory that is often forgotten today is that the intensity of the scattering depends on the refractive index of the scattering medium.
There is another factor at play here. Green lasers have a finer beam diameter, so the beam is more concentrated.