thing they needed to make sure this was successful was to build a working transmitter with a membrane that was capable of varying electric currents and a receiver that would reproduce these varying currents in frequencies that were audible to the human In this next part of our series on the history of the telephone we pick up with Bell's meeting with the director of the Smithsonian Institute, Joseph Henry.

Up until March of 1875 Bell and his assistant Thomas Watson continued their work on the harmonic telegraph at the urging of Hubbard and a number of other backers. Bell certainly had plenty of support in his endeavor. In spite of this, in March of 1875 he met with Joseph Henry who was the director of the Smithsonian Institute. Henry listened to what Bell had to say about his idea and gave him some very encouraging words. It was actually Henry's encouragement that gave Bell the confidence he needed to go on with his experiments. Bell then returned home to Watson and they continued their work.

Finally, in June of 1875 a device that could transmit speech electrically was about to be completed and tested. Bell had already proven that different tones, when transmitted, would vary the strength of an electric current in a wire. The only thing they needed to make sure this was successful was to build a working transmitter with a membrane that was capable of varying electric currents and a receiver that would reproduce these varying currents in frequencies that were audible to the human e

monic telegraph at the urging of Hubbard and a number of other backers. Bell certainly had plenty of support in his endeavor. In spite of this, in March of 1875 he met with Joseph Henry who was the director of the Smithsonian Institute. Henry listened to what Bell had to say about his idea and gave him some very encouraging words. It was actually Henry's encouragement that gave Bell the confidence he needed to go on with his experiments. Bell then returned home to Watson and they continued their work.

Finally, in June of 1875 a device that could transmit speech electrically was about to be completed and tested. Bell had already proven that different tones, when transmitted, would vary the strength of an electric current in a wire. The only thing they needed to make sure this was successful was to build a working transmitter with a membrane that was capable of varying electric currents and a receiver that would reproduce these varying currents in frequencies that were audible to the human

to what Bell had to say about his idea and gave him some very encouraging words. It was actually Henry's encouragement that gave Bell the confidence he needed to go on with his experiments. Bell then returned home to Watson and they continued their work.

Finally, in June of 1875 a device that could transmit speech electrically was about to be completed and tested. Bell had already proven that different tones, when transmitted, would vary the strength of an electric current in a wire. The only thing they needed to make sure this was successful was to build a working transmitter with a membrane that was capable of varying electric currents and a receiver that would reproduce these varying currents in frequencies that were audible to the human

rk.

Finally, in June of 1875 a device that could transmit speech electrically was about to be completed and tested. Bell had already proven that different tones, when transmitted, would vary the strength of an electric current in a wire. The only thing they needed to make sure this was successful was to build a working transmitter with a membrane that was capable of varying electric currents and a receiver that would reproduce these varying currents in frequencies that were audible to the human

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