What is the term for a light ray that is bent when it enters a new medium?

the median of the data is 4.5.

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link:

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.