What to do with RGB leds?

[Zero999]

dim yellow is not brown, its yellow.

Is there something wrong with your eyesight?

Do you not agree that the circle in my previous attachment is brown?

if it were brown, turning up the power would make it more brown, not less.

just like turning up a blue light will make it more blue.

So what is grey then?  It's nothing but dim white, just like brown is dim yellow.

By your logic just turning up the power makes it more grey.

with a solid i mean literally solids, IE: paint.
if u mix paint colours, it mixes completely differently from the way light colours mix.

light = light, solids = light reflected off, and thereby being influenced by the properties of, the surface material.

You (not u) mean pigments which are opposite to lights. In the pigment world brown can be created by adding black or a small amount of magenta and cyan to yellow.

LCDs don't emit light, they refract it.

No they filter light created by the back light. Refraction is something different.

what you are seeing is not pure light, the colour is created by light being refracted trough the lcd.

I know, it's a mixture of red, green and blue light and you get brown by setting the red and green pixels on the monitor to 50% brightness and yellow by setting them to 100% brightness. If you look at the RGB value of the pixels on the circle in my previous attachment, you'll see this.

If you have two lights shining on a white wall in a darkened room, one yellow and the other white, then turned down the brightness of the yellow, it would appear to be brown, then if you turned down the white also it would appear grey,

this is simply wrong.
all u can get this way is different shades of yellow.

Yes, all shades of yellow from black, to dark yellow (brown) to very bright yellow, just like on the attachment I posted previously, if you care to look.

[sacherjj]

All the browns we are seeing in this thread as LIGHTS no SOLIDS, due to the fact that all our monitors are sending LIGHT to our eyes, we are not looking at them from reflected light (as you would with a SOLID.)

[Vertigo]

look, your just wrong, and i am tired of arguing.

a monitor does not = a beam of light, thats light refracted troug the screen of your computer.
yeah the screen is brown, the light it emits is orange.

if u don't believe me, try it and find out.

oh hell, ill make it a contest:

first person to find me a grey beam of light gets my slightly used grey Leatherman Charge AL.

[Zero999]

yeah the screen is brown, the light it emits is orange.

if u don't believe me, try it and find out.

oh hell, ill make it a contest:

first person to find me a grey beam of light gets my slightly used grey Leatherman Charge AL.

I agree with you.

I think there's been a miscommunication, going from your location, I assume English not being your first language.

[Vertigo]

no misunderstandings here dude, if there is one it is entirely on your side.
we speak english just fine here in holland.

there is no such thing as brown or grey light, your wrong, get over it.

[ndictu]

we speak english just fine here in holland.
...
your wrong

But I agree with you, colors aren't just as simple as RGB model, the perception also depends on surrounding, eg. the same shade of orange in this picture looks as orange and brown:

[Zero999]

no misunderstandings here dude, if there is one it is entirely on your side.
we speak english just fine here in holland.

there is no such thing as brown or grey light, your wrong, get over

Ahhg, I never said there was such a thing as brown or grey light. Your English obviously isn't as good as you think. You've totally misunderstood every single post I've made in this thread. Going from your previous post, your English is pretty poor: you don't even know how to use proper punctuation.

Go on, post a quote of me saying there is such a thing as grey or brown light.

But I agree with you, colors aren't just as simple as RGB model, the perception also depends on surrounding, eg. the same shade of orange in this picture looks as orange and brown:

Thanks for posting that image. I tried to explain that earlier on, but he didn't understand.

You only see it as brown because it appears to be darker than the other colours on you monitor i.e. white, yellow pink etc. If you have two lights shining on a white wall in a darkened room, one yellow and the other white, then turned down the brightness of the yellow, it would appear to be brown, then if you turned down the white also it would appear grey, until your eyes adjusted to the lower light intensity making the grey appear more white and the brown appear yellow. Of course as it get much darker, the cone cells in your eyes would stop responding so you'd see less colour (both colours would appear more greyish) and the yellow would appear more greenish if it were composed of red and green light, or just dimmer if it were pure yellow and the white would shift more to the blue end of the spectrum.

[Vertigo]

has anyone ever accused you of being a narcissist?

[Zero999]

has anyone ever accused you of being a narcissist?

No, only you.

Why? What's wrong, still can't quote me on saying there is such a thing as grey or brown light?

[Vertigo]

no actually that was a question.
do you understand the difference?

you were talking out of your ass, and you ain't fooling anyone with these
fallacious debate tactics.
you were wrong, get over yourself!

you spent half a page arguing against 2 statements that were crystal clear,
and one of them wasn't even mine.
so interpretation on my part is not even relevant to that point.

what kind of a pathetic little fairy are you anyways to go trough these mental gymnastics
to avoid having to admit you were talking out of your ass while hiding behind a nickname on
1 forum among millions, surrounded by people you don't even know, on a point that is beyond
trivial?
why is the idea of being wrong about such banal minutia such a horror to you?

that ain't normal dude, and it ain't healthy.
not quite as unhealthy as actually trying to pull this irl, but then
you don't talk much irl at all do you?

you were wrong, its plain for everyone to see, and no amount of insults to my person is going to change that.

get help.

[Tony R]

You could make an M&M sorter, i have seen videos of it before, flash each the Red Green and Blue lights at it use a photo sensitive cell to pick up the intensity off the LED and then a mechanical structure to sort them out

[Zero999]

you were wrong, its plain for everyone to see, and no amount of insults to my person is going to change that.

No, you're wrong again, I've not insulted you once, you're the one who started the name calling.

what kind of a pathetic little fairy are you anyways to go trough these mental gymnastics
to avoid having to admit you were talking out of your ass while hiding behind a nickname on
1 forum among millions, surrounded by people you don't even know, on a point that is beyond
trivial?

I'm not going to bother going go through the rest of your childish post. I was also annoyed that you couldn't take it that you were wrong but I've read through the thread and I now realise we were probably both to blame. All I can say is, hopefully other people here will see this was just a misunderstanding, on both our parts and I hope you'll also see that when you've calmed down.

You could make an M&M sorter, i have seen videos of it before, flash each the Red Green and Blue lights at it use a photo sensitive cell to pick up the intensity off the LED and then a mechanical structure to sort them out

I've seen that before but with snooker balls. The most common way is to flash each LED on briefly and monitor the reflected light level. It's also possible to use three sensors with different coloured filters and a white light.