Inventions That Changed The World The Telephone 001

[903lew]

I've done that thing with people holding leads when I was younger. Simplest way to check commo wire is to make two of your mates hold the ends, connect a field phone and crank away! ^^

[armands9186]

The quick brown fox jumps over the lazy dog

[sio77nvd4]

Where did that battery used to electrocute the monks come from? O.o

[penitent2401]

@sio77nvd4 2 pieces of metal (zinc and copper is popular) in a jar filled with acid (vinegar or lemonade will do). put it in series with alot other batteries and the voltage adds up

[Deezhan]

@sio77nvd4 from Duracell factory right behind the monestary;)

[ThinkStage]

Very cool

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