Wireless Electricity | Part 1 | Bang Goes The Theory | Earth Science

Taken from Bang Goes The Theory: Series 6.


Welcome to BBC Earth Science! Here we answer all your curious questions about science in the world around you (and further afield too). If there's a question you have that we haven't yet answered let us know in the comments on any of our videos and it could be answered by one of our Earth Science experts.

[NerdlabsSci]

I've actually built several tesla coils like the one shown in this video. Although they are still impractical for powering homes, they aren't as dangerous as Jem makes them out to be here. While filming one of my tesla coils for my youtube channel, my dad accidentally got zapped by a few hundred thousand volts. He was fine. I have actually touched smaller tesla coils while feeling very little pain and no lasting damage.

[ChipsMattGaming]

It is cool but seriously whats with the weird camera shakes and sounds ? I really don't think its necessary.

[Nilguiri]

OK, interesting intro, now where's the main video?

[dallebull]

Rumors say that Tesla was trying to harness the electromagnesity of the earth as well. Free Energy for all!

[TheBigBigBlues]

Really nice demonstrations of that technique. I wish it hadn't been filmed in the style of a crime drama. Some decent shots of the rig without the camera flicking back and forth would be nice.

[joshlloyd]

can we please have a link to the full video

[Flagen]

Well, thats exactly how transformers work. Just different sized coils.

[kardredren]

"precious little power loss" is an extreme exaggeration when it comes to power distribution by cable. There are HUGE losses, but compared to Tesla's "wireless" transmission, they are small.

[Hollyweed]

TV producers should take this in consideration and we could finally have wireless/plug-less tv's.

[jjab]

Wireless power is far less efficient than wired power and generally people leave the wireless chargers switched on constantly, meaning they are probably using 10 times more power than if they had to plug in a charger. Hardly good for the environment and we are short of electricity as it is, so perhaps we should develop these solutions a little more before offering them to the public to avoid huge waste of a precious resource????

[OliX]

Tesla coils are hidden until a unit comes near

[CptZetox]

Why the weird big cirle in the final form? Is that still a coil?

[uberhakz]

'Brit Lab', uses feet for measurement??

[fuseteam]

really?! just when you got me interested :(

[danb]

Never connect a battery to a transformer with a load (as shown @ 02:50) it is highly dangerous for the transformer, the load and the user.

[utkua]

single coil can transmit power to a distance to itself, distance in time that is, that is how oscillators. work.

[google_was_my_idea]

Quite interesting, so wish they'd have taught such stuff in school, it would've been more interesting!

[nathantron]

This is old research, nasa had put out a bulletin and reward for anyone who knew about this stuff ages ago. Still cool though.

[BrokebackBob]

Tesla was not in any way mad, he was a genius who accomplished more than Einstein.

[LDK]

if only i watched this before my Physics O level paper