The latest installment of Veritasium is all about the "Pyro-Board." This snazzy contraption is a mesmerizing, planar take on the Rubens' tube – a perforated tube of gas – hooked up to a gas jet and a speaker – that can turn music into beautifully patterned, leaping flicks of fire. »4/18/14 10:40am 4/18/14 10:40am
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