• Treczoks@lemmy.world
      link
      fedilink
      arrow-up
      11
      arrow-down
      1
      ·
      3 days ago

      Yep, but it is confusing for many, if not most people. A lot of people simply don’t understand why plant growth lights are pinkish-violet, not green.

        • XeroxCool@lemmy.world
          link
          fedilink
          arrow-up
          4
          ·
          1 day ago

          And? I talk to non-art students. If you never have to think about it, most people won’t. I promise you, there are plenty of “obvious” topics you are oblivious to and misunderstand. We all have them.

          • Wren@lemmy.today
            link
            fedilink
            English
            arrow-up
            2
            ·
            1 day ago

            I don’t teach art students, I teach one-off classes to teens and adults.

      • Anivia@feddit.org
        link
        fedilink
        arrow-up
        3
        ·
        2 days ago

        plant growth lights are pinkish-violet

        Really shitty ones are. High quality grow lights use full-spectrum lights including far-red and infrared, and are proven to be more effective than the so called “blurple” temu lights

        • Treczoks@lemmy.world
          link
          fedilink
          arrow-up
          3
          ·
          2 days ago

          And you can see sooo much of the infrared and ultraviolet part of the spectrum. What you see is still a kind of pinkish-violet.

          By the way, no LED based light is “full spectrum”. That is a common lie. Growth lights have violet-blue LEDs in the 200-400nm range, and red ones in the 600-800nm range.

          If you do a spectrum analysis of any LED light, you will see distinctive, narrow peaks around the LEDs core frequencies, usually with a bandwidth of 12-40nm.

          For absortion ranges of Chlorophyll A and B, see for example https://www.mpsd.mpg.de/17628/2015-04-chlorophyll-rubio