41. This is known as electromagnetic induction , and is the underlying principle used in the construction of electrical generators. 42. Following Faraday's discovery of electromagnetic induction in 1831, Amp�re agreed that Faraday deserved full credit for the discovery. 43. In 1831, Michael Faraday discovered electromagnetic induction when he found that a changing magnetic field generates an encircling electric field. 44. A changing magnetic field will influence the distribution of an electric current flowing within an electrical conductor, by electromagnetic induction . 45. Stokes was convinced the phenomenon Hughes was demonstrating was merely electromagnetic induction , not a type of conduction through the air. 46. Stokes was convinced the phenomenon Hughes was demonstrating was merely electromagnetic induction , not a type of transmission through the air. 47. The exact technology is a secret, but PaveGen officials have said it involves electromagnetic induction by copper coils and magnets. 48. In the late 1970s Infinity introduced the EMIT ( electromagnetic induction tweeter ) and EMIM ( electromagnetic induction midrange ) drivers. 49. Magnetic excitation of the solar panels of the solar battery may be done by electromagnetic induction rather than by magnetic induction? 50. Early HDDs used an electromagnet both to magnetise the region and to then read its magnetic field by using electromagnetic induction .
