Maybe we have a future with no charging cords and just being at home and your phone is automatically charging from your “Wireless Charging Router”.

Sorry if this sounds stupid lol. I like to imagine weird ways we can use technology.

  • zxqwas@lemmy.world
    19·
    9 days ago

    The energy in a wave is inversely proportional to distance squared. In other words if you double the distance you get one quarter of the power.

    For information transfer like wifi this does not matter as long as it’s enough to be detected.

    For power transfer this becomes a huge problem quickly because it’s the energy itself that is being transferred.

    • FuglyDuck@lemmy.worldEnglish
      5·
      9 days ago

      It’s also important to note thst the increased power required significantly better cooling- on both devices.

      Nikola Tesla did a lot of research on inductive transmission and found it was basically useless for high power and long range. (Interestingly, he wanted to create a shield that would fry anything metallic coming near it. Like artillery shells and airplanes. Besides the power demands being utterly ridiculous, it could have conceivably worked.)