MIT Physics | Walter Lewin: The Electric Shield (Faraday Cage) Witness one of the most electrifying demonstrations in physics as Professor Walter Lewin steps inside a wire mesh cage and subjects himself to hundreds of thousands of volts. This unforgettable lecture illustrates the powerful concept of electric shielding, or the Faraday cage effect. Discover the fundamental principle of electrostatics that explains why the electric charge resides exclusively on the outer surface of a conductor, lea

On this day in 1836, Michael Faraday constructed the first Faraday cage ⚡ A Faraday cage shields the interior from external electromagnetic radiation and electrical fields by channelling electricity through the cage, providing constant voltage on all sides of the enclosure. Since the difference in voltage is the measure of electrical potential, no current flows through the interior space of the cage. In our daily lives we are surrounded by this invention. Faraday cages can be found in microwave