Hi guys

I heard of this brilliant idea which got 2nd placing in a business plan competition.

It's about a handphone which can be charged using sound energy. That means, as we speak during a conversation, the phone will automatically charge itself, hence no need for batteries replacement.

Is it possible? I'm quite skeptical.

Yeap, but if it's possible, that means we can put this devices along the highway, cars engine produce sound energy after all, and this energy can light up the street lamps.

Sound energy, but travels via wave, longitudinal wave IIRC

But sound are actually produced via vibrations, hmm

This post has been edited by karhoe: Jun 16 2009, 03:24 PM

I think that it might work, but I agree with one of you that most of the energy will be lost as heat.