[video=youtube;Mh8-idXgbUY]http://www.youtube.com/watch?v=Mh8-idXgbUY[/video]
Uhm... can anybody translate it please?
The black slides translates to:
What you need:
1 very powerful and operational radio tower
1 unused radio tower
90 meters of cabling
What you get: a Russian radio.
Where is the sound coming from?
[QUOTE=Chaohord;38365170]Where is the sound coming from?[/QUOTE]
Vibrations of the braided wires.
[QUOTE=Chaohord;38365170]Where is the sound coming from?[/QUOTE]
The power going into creating the spark is modulated by the volume of the radio signal (it's a bit more complicated than that, but you get the idea), so the hot gas of the spark expands and contracts rapidly as the energy put into it is proportional to the sound signal.
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