2. Look up "Snell's Law". It will likely have a "sin" of an angle in the equation. See how much of this makes sense to you. If you find an equation for it, make sure you have a picture that goes with it.
3. Play around with this applet (from class):
4. You have a sense of what happens when light goes from air (or a vacuum) into water (or plastic, glass, etc.). What do you suppose happens when light goes from water into air? Draw this out and explain.
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