Video Transcription
I just want to say ET could be also thought of refracted, reflected and refracted, but those are
two R's. Is it all clear why we have to use T? Because this is the reflected ray, right? Boom.
And this is the refracted ray. So let's just use T for transmitted. It's fantastic, but it's easy
to sometimes think of reflected and refracted. You got to keep it, you're going to use transmitted
or refraction, right? The ending of light when it's that new material. So, so far so good.