Quantum and Nuclear | Light, Sound and Waves

Starting points on the nature of light

Teaching Guidance for 14-16 Supporting Physics Teaching

A fascinating and challenging step forward

In episode 01, Radiating from source to absorber, a description was developed of light and sound as originating in vibrations that travel from a source as electromagnetic and mechanical waves. This picture of light and sound waves will be a familiar one to students, not just from studies of science in school but also through common usage of these terms in everyday life.

In this episode, we shall be asking the students to take a fascinating and challenging step forward in their learning. This involves coming to accept that light does not shift energy in a steady stream but in tiny, discrete units, or chunks.

is exhibited by Photoelectric Effect
can be explained by the Bohr Model
can be described by the relation E=hf
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