Re: Apple told to warn against charging phone in bath after man's electrocution

Path	csiph.com!xmission!news.alt.net
From	"James Wilkinson Sword" <imvalid@somewear.com>
Newsgroups	comp.os.linux.advocacy, comp.sys.mac.system, alt.comp.os.windows-10, alt.cellular-phone-tech
Subject	Re: Apple told to warn against charging phone in bath after man's electrocution
Date	Thu, 27 Apr 2017 22:58:08 +0100
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Cross-posted to 4 groups.

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On Sun, 16 Apr 2017 00:10:10 +0100, nospam <nospam@nospam.invalid> wrote:

> In article <ocu589$ade$1@dont-email.me>, Sprang <spring@sprung.invalid>
> wrote:
>
>> >>
>> >> So you believe there are colours you can see in reality that are never
>> >> shown on your screen?
>> >
>> > it's physically impossible for a screen to display all the colours a
>> > human can see, at least with today's technology. maybe at some point in
>> > the future, but that day is not now.
>>
>> A human can see 10 million colours.
>
> depends on how it's counted, and that's not the issue anyway.
>
>> An 8-bit RGB display can generate 16.77 million colours.
>
> no it definitely can't.
>
> the colours that can be displayed depends on the colour gamut of the
> display. a wide gamut display can display noticeably more colours than
> a standard srgb display.
>
> also, if your images are 8 bpc (24 bpp), then you definitely aren't
> getting the widest gamut possible. the better displays use 12 bit luts
> with 16 bpc (48 bpp) images.
>
> garbage in/garbage out.
>
>> I would think it can display more colours than a person can see, though you
>> wouldn't see them. :)
>
> you would think wrong.
>
> the fact is that humans can see a *lot* more colours than can be
> displayed or printed.
>
> <http://www.sant-media.co.uk/wp-content/uploads/2010/06/cie.jpg>
>
> display and printer gamuts intersect, which means displays can show
> some colours that can't be printed and printers can print some colours
> that can't be displayed. both are smaller than what humans can see.

8 bits per colour means 16 million colours, end of story.

-- 
Climate change will exist so long as there's money to be made from it.

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Re: Apple told to warn against charging phone in bath after man's electrocution "James Wilkinson Sword" <imvalid@somewear.com> - 2017-04-27 22:58 +0100

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