Quite unusual, was it pure? As far as I know they always mix it with other nasty stuff beig it an excellent polar solvent

This is right. This requires a discussion a bit wider than 420 letters, even more when they come from Rowling

If only there was a solution, I don’t know, a cable resistent to jamming the ether, something we could call ether-jamming-resistant-network, in short Ethernet

I know… I am just dreaming :-P

Funghi

Sorry, but you are wrong, battery means exactly chemical battery

Gravity electrical storage is not a battery

https://en.wikipedia.org/wiki/Electric_battery?wprov=sfla1

Yep

And the picture from 1991 is in black and white?

GTFO

Edit: seems I was wrong in my assumptions