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Waves are disturbances that propagate through space and time. Classically, they travelled through a medium, disturbing the particles but not changing their mean position. Electromagnetic waves/particle-waves need no medium; they are disturbances in their respective fields.

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Show that the wave can be written in this form?

I have completed the first part of the question but left it in for context, however I am not entirely sure what the second part is asking, am I supposed to write the components added or multiplied su …
Joel stacey's user avatar