I'm not a physicist nor do I plan to become. But I bet this following video will just trigger your curiosity toward physics, once you watch this awesome music-science video by Nigel Stanford here:

“In 1999 I watched a documentary on Synesthesia — a disorder that effects the audio and visual functions of the brain. People with the disorder hear a sound when they see bright colours, or see a color when they hear various sounds. I don’t have it (I don’t think), but I have always felt that bass frequencies are red, and treble frequencies are white,” Stanford wrote.

“This got me thinking that it would be cool to make a music video where every time a sound plays, you see a corresponding visual element. Many years later, I saw some videos about Cymatics — the science of visualising audio frequencies — and the idea for the video was born.” (CNET)
This, will surely direct people's minds to the idea of free energy by Tesla, or find out more of it here.

I can't write more about this due to my lack of knowledge in science and physics, but this video is surely brings us a message, that there are energies working around us, that is related to aura, law of attraction and everything else--you name it. I'm just saying that our universe is a lot richer than what we know. And I am just as curious to find out more about it!