Lecture 2 - Getting rid of the wires

In this second lecture, Gouriet fist demonstrates the behaviour of mechanical waves; how they are produced, propagate and how they interact with other waves. He then goes on to show how the mechanical waves behaviour is analogous to that of electromagnetic waves.

Now, with a more intuitive understanding of electromagnetic waves, Gouriet uses a number of methods to produce and transmit radio waves that can be translated to information, like for example switching on and off a lamp at a distance can pass on information in the form of Morse code.

Finally we learn how the Earth's atmosphere can be utilized to our advantage to transmit radio waves across long distances.

Year

1972

Lecturer

Geoffrey G. Gouriet

Duration

58:28

All lectures in the series