Hertz was the first to observe what effect in electromagnetic waves?
Photoelectric effect
Doppler effect
Reflection
Refraction
Answer
Reflection is the phenomenon Hertz first observed in electromagnetic waves. It occurs when an electromagnetic wave encounters a boundary between two different materials and bounces back. The angle of incidence (the angle at which the wave hits the boundary) is equal to the angle of reflection (the angle at which the wave bounces back). This effect is essential for many technologies, such as radar and telecommunications.
Mastering the Hertz: Unveiling the Legacy of Heinrich Hertz
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