Table of Contents

• Sound Into Visible Form

• Sound Into Current

  • Helmholtz Device

    • Helmholtz Transmitter and Receiver

  • From Tuning Fork to Reed

    • Toward Bi-Directional

    • Evolution of a Mechanical Representation

• Multiple Telegraph Part II

  • Circuit Connections, 1874

• Harp Apparatus Sub-Map

  • Harp and Sound Waves

• Molecular Vibration Sub-Map

  • Molecular Vibration Helix Experiments

• Virbratory Analyzer Slot

• Diagram of June 2nd Experiment

• Long Distance Transmission, June-July 1875

  • Double Pole Transmitter

    • Double Circuit Experiments

• First Gallows Telephone

• Ear Mental Model

  • Autograph Style Drawing

  • Electrical Current into Sound and Mechanical Motion

    • Manometric Flame Capsule or Flame Galvonometer Experiments

      • Experimental Transmitter

      • Flame Galvanometer Experiments, February 24, 1876

• Bell's First Patent: 174,465

• Bell's March 8th Resistance Experiments

• Bell's Liquid Variable Resistance Experiments, March 8th-10th

• Bell's Second Patent

• Master Map
• Introduction
• References
• Help
• Send a Comment
• Return to home page

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