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## Main Question or Discussion Point

Hi, I was wondering how come I can get a transmission coefficient higher than one?

In the equation at normal incidence:

t = E_t/E_0 = 2*n2/(n1+n2) > 1 if n2 > n1

How is it even possible to get a higher electric field amplitude out compared to the one that got in?

I'd be very grateful if someone could explain what I'm not getting about this.

In the equation at normal incidence:

t = E_t/E_0 = 2*n2/(n1+n2) > 1 if n2 > n1

How is it even possible to get a higher electric field amplitude out compared to the one that got in?

I'd be very grateful if someone could explain what I'm not getting about this.