Did someone tell you rainbows contain all the colors? Well, that’s not true! It is missing a whopping 28% of colors!🌈

  • AbouBenAdhem@lemmy.world
    link
    fedilink
    English
    arrow-up
    39
    ·
    8 months ago

    72% of all hues.

    The space of visible colors is three-dimensional, and the spectrum is missing two dimensions (brightness and saturation). You can’t assign a percentage to that.

    • LeekWeek@lemmy.worldOP
      link
      fedilink
      arrow-up
      5
      ·
      8 months ago

      … also there are different choices for the scaling of the hue axis, so the percentage can change. This is also noted in the vid.

    • MatFi@lemmy.thias.xyz
      link
      fedilink
      English
      arrow-up
      1
      ·
      8 months ago

      Well there is wavelength and intensity, an all together it is called a spectrum. No need for a third parameter. Also there are mor than 100% of all colors in there, as a quick check on Wikipedia would reveal…

      • AbouBenAdhem@lemmy.world
        link
        fedilink
        English
        arrow-up
        3
        ·
        edit-2
        8 months ago

        The third parameter is saturation, which comes into play for non-monochromatic (i.e., multiple-wavelength) colors.

      • Alacriiity@lemmy.zip
        link
        fedilink
        arrow-up
        1
        ·
        8 months ago

        He communicates how my brain comprehends. I watched so much of his content one time realizing my whole day was gone. I thought only an hour or two went by

  • XeroxCool@lemmy.world
    link
    fedilink
    arrow-up
    5
    ·
    8 months ago

    I’d recommend reiterating why fushia isn’t there. I rewound the video to find the relevant part again (not hard in a <5 minute video) but, imo, restating the cause and effect after separately stating the cause and then effect would help drive home the message. This way, you can actually apply the cause to the now-known effect. Maybe that’s just me.

    • LeekWeek@lemmy.worldOP
      link
      fedilink
      arrow-up
      4
      ·
      8 months ago

      that is a very good point! YouTube does not let you change videos, but I will keep this in mind for the next one.

    • KingJalopy @lemm.ee
      link
      fedilink
      arrow-up
      3
      ·
      8 months ago

      I feel you, I am also one of those poor bastards constantly being corrected about what color something is, however that doesn’t mean they’re missing, they’re just hiding from us.

      • Evil_incarnate@lemm.ee
        link
        fedilink
        English
        arrow-up
        2
        ·
        8 months ago

        My partner is tetrachromatic so I see way less colours than them. Apparently. Maybe it’s all a big joke by paint companies and only a couple of colours exist.

    • LeekWeek@lemmy.worldOP
      link
      fedilink
      arrow-up
      4
      ·
      8 months ago

      No. It has to do with spectral color hues and non-spectral color hues. Actually there is a lot of confusing information out there.

    • MatFi@lemmy.thias.xyz
      link
      fedilink
      English
      arrow-up
      1
      ·
      8 months ago

      Naah… Its just confusing spectra with perception… We may only perceive 72% of the spectra… But the rainbow it self has all the colors…

      • LeekWeek@lemmy.worldOP
        link
        fedilink
        arrow-up
        6
        ·
        8 months ago

        No it does not. The rainbow has all wavelength within the visible spectrum. But not all colors. And yes, color is based on perception.

      • brianorca@lemmy.world
        link
        fedilink
        arrow-up
        3
        ·
        edit-2
        8 months ago

        Our eye perceives color as a mix of red, green, blue. The lowest color of the rainbow is red (hue 0 degrees on a color wheel) but our red cones have another sensitivity just above blue, so the rainbow shows as violet (hue 270 degrees) when both blue and red cones are triggered. But here, blue is triggered more than red. Then the rainbow extends into the ultraviolet which doesn’t trigger any of our receptors. But the color wheel still has another 90 degrees or so of hue where red gets stronger and blue is weaker. These are not pure spectral colors, because they must activate both red and blue cones at different frequencies, not just a single frequency like violet does.