No matrices, no BACCAB identity, no comparing to wave equation. Just modelling electric and magnetic fields using cosines and then substituting into Maxwell's equations to derive the speed of light.

This is a great introduction to divergence and curl operators using basic mathematics accessible to ALevel students.

(ALevels are a qualification in the UK (but not Scotland). The name ALevel is short for AGCE, which stands for Advanced General Certificate of Education. It's the course 1618 year olds can choose to study)

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