Definition: A point at which reflected or refracted rays of light converge.

Alright class, settle in and let’s take a look! That’s a very precise definition from the dictionary – quite technical, isn't it? Let's break it down to make sure everyone understands. The word "focuses" means, essentially, to bring something together . Think about a camera lens, you see? It bends light rays – they refract , as the dictionary says - and makes them all meet at one specific spot. That spot is the focus . It’s like this: imagine throwing pebbles into a pond. If you throw them randomly, they'll spread out in circles. But if you aim carefully, all the ripples will come together at a single point – that’s where the focus lies! So, "focuses" isn’t just about light; it means to direct attention, concentrate your efforts, or bring something into sharp clarity. Like when we're studying for a test - we focus on our notes and practice questions. Does that make sense? Do you have any questions about what 'focuses' means in this context?