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Here is a bit more on Lenz’s law from wikipedia which actually powers some hoverboards

Lenz’s law /ˈlɛnts/ is a common way of understanding how electromagnetic circuits obey Newton’s third law and the conservation of energy.[1] Lenz’s law is named after Heinrich Lenz, and it says:

If an induced current flows, its direction is always such that it will oppose the change which produced it.

Lenz’s law is shown with the negative sign in Faraday’s law of induction:

\mathcal{E}=-\frac{\partial \Phi}{\partial t},

which indicates that the induced voltage (ℰ) and the change in magnetic flux (∂Φ) have opposite signs.[2] Lenz’s Law is a qualitative law that refers to the direction of induced current in relation to the effect which produces it without quantitatively relating their magnitudes.

I wonder how much more of this principle we will see in new energy efficient inventions and transportation!  We hope you enjoy this cool video.

big thanks to wikipedia for the info



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