I found an old portable record player, put a disk on there and turned the disk with my hand manually. Music started coming out. How?
It plugs into the wall. But don't the speakers at least need power? There isn't a battery in there..
Actually I don't think it's coming from the speaker. It actually seems to be coming from the needle.
But it's just a tiny needle. How can it act as a relatively loud speaker while also reading the grooves in the disk?
Now I'd taken a push pin and used that as a needle. same effect. That's really strange!