• UK-made, invisible radio wave weapon knocks out drone swarms for the first time.
  • Weapon has potential to help protect against drone threats as nature of warfare changes.
      • Morphit @feddit.uk
        link
        fedilink
        English
        arrow-up
        1
        ·
        6 hours ago

        Infrared lasers aren’t visible. They’re still higher frequency than radio waves. To say that visible light is visible radio is to say that the sky is green, just that it’s predominantly blue coloured green.

      • piecat@lemmy.world
        link
        fedilink
        English
        arrow-up
        10
        arrow-down
        2
        ·
        14 hours ago

        Radio waves are a specific wavelength/band of the EM spectrum. Light is not radio waves, just as radiowaves aren’t light.

        They’re both electromagnetic waves.

      • tate@lemmy.sdf.org
        link
        fedilink
        English
        arrow-up
        11
        arrow-down
        9
        ·
        2 days ago

        Look around the space you’re in and notice that you can’t “see” the light, only the things.

            • YiddishMcSquidish@lemmy.today
              link
              fedilink
              English
              arrow-up
              2
              ·
              10 hours ago

              It is literally activating the rods and cones based on photons hitting them. Do you think we don’t smell smells either?

            • FooBarrington@lemmy.world
              link
              fedilink
              English
              arrow-up
              7
              ·
              1 day ago

              Ah yes, that’s famously why screens literally build tiny versions of the world inside them. We don’t see the light, we see the objects!

              • tate@lemmy.sdf.org
                link
                fedilink
                English
                arrow-up
                3
                arrow-down
                6
                ·
                1 day ago

                The light that enters your eye carries enormous amounts of information with it. Your eye and a small portion of your brain comprise a highly specific tool for extracting a small subset of that information and processing it. The information you use is only related to the last object the light interacted with, not the light itself (with the small exception being the “brightness” - that has nothing to do with the object).

                No one claims to hear the air in their ears rather than the violin that is being played nearby. That’s just not what the word “hear” means.

                • FooBarrington@lemmy.world
                  link
                  fedilink
                  English
                  arrow-up
                  4
                  ·
                  edit-2
                  24 hours ago

                  The information you use is only related to the last object the light interacted with, not the light itself (with the small exception being the “brightness” - that has nothing to do with the object).

                  This is obviously false, otherwise all objects would look the same under any color of light - yet they don’t. This example actually shows that it is only the light itself that matters, because it has the information of the objects it interacted with during its lifetime!

                  No one claims to hear the air in their ears rather than the violin that is being played nearby. That’s just not what the word “hear” means.

                  But everyone would agree that we’re hearing the sound waves produced by the violin. Again, a great example counter to your point, as the equivalent to a sound wave is the photon.

          • Tetsuo@jlai.lu
            link
            fedilink
            English
            arrow-up
            4
            arrow-down
            3
            ·
            2 days ago

            You can’t see light. You can see things illuminated by light.

              • DrunkenPirate@feddit.org
                link
                fedilink
                English
                arrow-up
                4
                ·
                edit-2
                2 days ago

                That’s it. And, indeed, you see light. That’s what your eyes do.

                Little smart ass knowhow: With your hands, you can feel light.

                You feel infrared light as heat. Not visible light though. Just heat up your cooker stove and it emits a bit visible red and a lot infrared light. Don’t touch just keep your hand close to the stove. Now you feel the IR-„light“.

                Or just take an IR-lamp for your neck pain. You‘ll feel the light that’s emitting with your hands.

              • tate@lemmy.sdf.org
                link
                fedilink
                English
                arrow-up
                1
                arrow-down
                3
                ·
                11 hours ago

                That’s not what the word “see” means. You’re trying to to swap it for another word like “sense.” You see objects, not light.

                • YiddishMcSquidish@lemmy.today
                  link
                  fedilink
                  English
                  arrow-up
                  2
                  ·
                  10 hours ago

                  Bro, take the L and walk away. Seeing is a sense, senses are neurons activated by something, whether it’s; temperature, chemicals, or photons.

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

          Imagine if they showed real physics in sci-fi movies. You’d never see any laser blasts in space, just the result of their strike.

      • rottingleaf@lemmy.world
        link
        fedilink
        English
        arrow-up
        1
        ·
        edit-2
        2 days ago

        Lasers are more useful in surveillance and navigation and guidance and precision work in production, for a weapon they are, most of the time, out of place. Expensive, unreliable and weak.