One way to understand their proof is to think of light as a wave of oscillating electromagnetic fields with an associated electric current shuttling charge back and forth.
(One way to understand their proof; is; to think of light as a wave of oscillating electromagnetic fields with an associated electric current shuttling charge back and forth)
One way to understand their proof
is
to think of light as a wave of oscillating electromagnetic fields with an associated electric current shuttling charge back and forth