That no one is even questioning wireless charging and how all of the sudden we can basically transfer electricity through air is weird to me. How the fuck is electricity entering my phone battery without a cable?
Discussion
energy doesnt flow through cables but around them ⚡
but you are right like wtf
Lol, all things aside, wireless charging has been a thing for a long time, it’s just super lossy and inefficient, or at least always has been. Even now you have to be super specific of where/how you place the device. But wirelessly powered devices have been a thing for almost a century if I’m not mistaken. Just with insanely low power loads. There was soy devices at least in the 50s & 60s era that were totally passive until you shot focused radio waves at it, it would have enough power to run through a prebuilt circuit and could be used to broadcast audio from the room. In a way this is what NFC is, it takes just enough energy from the radio waves to run a tiny circuit and produce a computation.
The simplest explanation is that electromagnetic waves are just a form of energy.
From what I remember from school is that a magnetic field going thru a coil will produce a current in said coil. Basically the magnetic field makes electrons move in the coil which can be used to charge a phone battery or your toothbrush.
a while back i learned that bulbs don't light up through the energy current that flows inside the wires, they light up through both the electric and magnetic field propagating through space 𝗮𝗿𝗼𝘂𝗻𝗱 them
Veritasium, highly recommend
Magnetic fields can generate current in a wire.
The cable on my pixel 6 doesn't charge anymore, so rather than replacing the phone, got a wireless charging dock and back in biz.