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In his first lecture of the series, Pye introduces the audience to the range of different ways humans communicate with each other. From speech and music to radio waves and flags.
All animals depend on communication for both reproduction as well as social reasons. They communicate using a variety of different and sometimes surprising ways.
The use of echos is a communication method often used when visibility is poor. Two well known examples are radar, using radio waves, and bats which emit high frequency sounds.
David Pye examines how the telegraph, telephone, radio, television and laser beams and fiber optics work to send written messages, speech and pictures.
The human body is only able to function because the cells that make it up are able to communicate with each other using nerves, blood vessels, hormones and more.
Computers have come a long way since they were first created as calculating machines. David Pye looks at this evolution of technology.
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