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lumpenproletariat@quokk.au to Science Memes@mander.xyzEnglish · 21 days ago

4ks double meaning

quokk.au

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4ks double meaning

quokk.au

lumpenproletariat@quokk.au to Science Memes@mander.xyzEnglish · 21 days ago
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  • jordanlund@lemmy.world
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    21 days ago

    4K = 2160P

    • Tehdastehdas@piefed.social
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      21 days ago

      Depends.

      https://en.wikipedia.org/wiki/4K_resolution

      • floquant@lemmy.dbzer0.com
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        20 days ago

        Both main standards have the same vertical resolution. Cropped versions hardly count as “standard”

  • mmmm@sopuli.xyz
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    21 days ago

    Pretty sure it’s like 4°K = -269.15°C

    • Ziglin (it/they)@lemmy.world
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      21 days ago

      It is indeed just Kelvin, not degrees Kelvin.

      • mmmm@sopuli.xyz
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        21 days ago

        But Celsius are still °C

        • LifeInMultipleChoice@lemmy.dbzer0.com
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          21 days ago

          I thought Kelvins were measured in radians not degrees?

          • Iunnrais@piefed.social
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            21 days ago

            Nope, Kelvins are a countable unit, like meters. Celsius and Fahrenheit are not.

            • floquant@lemmy.dbzer0.com
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              20 days ago

              Is the difference that they can go negative or…? I never quite understand what makes them “degrees”

              • Iunnrais@piefed.social
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                20 days ago

                No, the difference is that if you double a kelvin number, you have quantifiably doubled the heat. If you double a Celsius or Fahrenheit number, you have not quantifiably doubled the heat… the number does not objectively count an amount of something.

                Think meters. A meter measures an exact length. Two meters is double one meter.

                Celsius doesn’t do that. Celsius is a scale between two amounts of heat.

                The equivalent for distance would be if we had a scale where 0 degrees distance was equal to 582.7762 meters, and 100 degrees distance was equal to 721.5323 meters. Each degree between 0 and a hundred is then a slice of that range. Maybe for the people who designed such a scale there’s useful reasons to do so, but you aren’t measuring the quantity or amount of something, you’re measuring a range.

                Kelvin measures molecular movement, just as hertz measures oscillations or cycles, or grams measure weight.

  • username_1@programming.dev
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    21 days ago

    4000 is 4k, not 4K.

  • Oaksey@lemmy.world
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    21 days ago

    A bit like 2000 requires “year” 2000

  • four@lemmy.zip
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    21 days ago

    What about 4096?

    • ascend@lemmy.radio
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      21 days ago

      3840 x 2160

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