The World Communicates
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  The story of communications and optics from the time of the ancients, now and into the future.
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Student Notes
This page links to brief notes for each lesson in the course. You will also find links, in the notes, to the history section of this site and to other websites with additional useful information.
Lesson 1 - Introduction
Lesson 2 - Waves
Lesson 3 - Sound waves
Lesson 4 - More about sound
Lesson 5 - Measuring sound
Lesson 6 - Frequency & wavelength
Lesson 7 - Superposition of waves
Lesson 8 - Electromagnetic waves
Lesson 9 - Reflection
Lesson 10 - Refraction
Lesson 11 - Total internal reflection
Lesson 12 - Inverse square law
Lesson 13 - Radio & TV
Lesson 14 - Electromagnetic spectrum
Lesson 15 - The digital Age

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