Video Segment |10:00


Video Segment |10:00

Since Alexander Graham Bell first patented the telephone in 1875, advances in radio technology and fiberoptics have brought the cell phone and wireless communication.

©2007 Discovery Education| Grade(s)

Related Topics

  • Alexander Graham Bell
  • AT&T
  • cell phone
  • electric current
  • electricity
  • FCC
  • Federal Communications Commission
  • fiberoptic cable
  • Joseph Henry
  • magnetism
  • Samuel Morse

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