We have experience and intuition for flat mirrors. But if we slightly curve these mirrors, a whole new world opens up. In this lesson we will explore the concave and convex mirrors and their applications.
It's possible to address whether a mirror is concave or convex, whether an object is in front or behind the mirror, whether an image is real or virtual, with just positive and negative signs. Let's explore how in this lesson
You may have seen that a straw, immersed in a glass of water, appears bent. It's actually the light, coming from the straw, that's bent. Light bends when it changes medium. It's a big deal because if it didn't, our eyes wouldn't work. So let's explore this bending of light in this lesson.
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About this unit
When light travels from one medium to another (like air to glass, or glass to water), it does three things. Some of it bounces off, some of it goes through, and the rest of it is absorbed.
In this chapter, we will explore the first two. We will explore what rules govern them, their technical names and then apply these rules to study the beautiful world of curved mirrors and lenses.