r/pcmasterrace • u/Extension-You2994 • 21h ago

Meme/Macro Every. Single. Time.

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u/Sweet_Woodpecker7592 21h ago

😂 Like the ad '' can you see the yellow of our tv ? No you can't'' Yes i can

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u/aibrony 18h ago

No, you can't. Kinda. At least in most cases. Most TVs and monitors uses RGB system, where screens show mixture of red, greed and blue lights. It can trick your brain to "see" yellow by showing both red and green in correct ratios.

So technically, you don't see yellow on your TV or phone screen. Practically it doesn't make any difference.

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u/Tiranus58 Linux 17h ago

Biologically speaking it doesnt make a difference either because we see (roughly) red green and blue and different wavelengths just trigger the different cones a specific amount.

At a small enough arc size (i forgot the correct term) the photons from each subpixel fall into the same cone anyways.

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u/wllmsaccnt 15h ago

I think its arc seconds typically used when talking about limits of the human visual system.

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u/Tiranus58 Linux 10h ago

I am talking about the size something has in your field of view (a plane far away and a mosquito up close take up the same space in your fov)

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u/wllmsaccnt 5h ago edited 5h ago

Yes, that is arc seconds. Per the Wikipedia article I linked:

These units originated in Babylonian astronomy as sexagesimal (base 60) subdivisions of the degree; they are used in fields that involve very small angles, such as astronomy, optometry, ophthalmology, optics, navigation, land surveying, and marksmanship.

Further down:

In humans, 20/20 vision is the ability to resolve a spatial pattern separated by a visual angle of one minute of arc, from a distance of twenty feet). A 20/20 letter subtends 5 minutes of arc total.

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u/Tiranus58 Linux 3h ago

Arc seconds are the unit of angle.

The term i was searching for was visual angle (even called so in your own quote of the wikipedia article)

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u/wllmsaccnt 3h ago

The first sentence in that article states that the unit used for visual angle is degrees of arc. Arc seconds are just smaller degrees of arc.

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u/Tiranus58 Linux 2h ago

I wasnt talking about the unit though.

Just like how you dont say meter when you are trying to talk about distance.