MIT Physics Demo -- Telegraph Transmitter

[Mandragore12345]

a coil within another coil.... (mutual) induction

[MasterTxJ]

You could probably light up your whole backyard with one of these babies. If you ground the pulsed current it could be transmitted through the ground to LED's with rectifiers and capacitors, which would light up in an area perhaps 10 meters in radius. Perhaps? Maybe you wont even need the rectifiers since it's pulsed DC induction?

[MasterTxJ]

@MasterTxJ Allthough you might not want to enter your backyard without rubber boots.

[Thetruthishere11]

just an iron core wrapped with wire attached to magnet which open and closes circuit.

[msf60khz]

For good RF generation you need a much smaller gap and the balls need to be polished. This is what Heinrich Hertz found.

[Poparotzi]

ITS ALIVE!!!!!

[BirdValiant]

The FCC probably hates this experiment.

[Joelduffy]

Eh, the interference probably doesn't project that far. It's not a freaking lightning storm. ;)

[benjwgarner]

@BirdValiant These things have been illegal for high-power transmitting since 1921 because they bleed harmonic interference all over the radio spectrum.

[marsCubed]

If everyone had one of those we wouldn't need cell phones.

[kdc43]

I can carry a cell phone in my pants. But...

I wouldn't want 347,000 volts in my pants.

I would find it SHOCKing!

[Necrokutan]

Please let me beat you now.

[kdc43]

OK, while you at it, give me a back massage.

[FORCETHETRUTH]

awesome!!