Light is everywhere, but it’s not as predictable as you might think. It’s a wave that travels in straight lines, yet it also reflects off of surfaces, refracts through various materials, and generally changes direction all the time. We know we can bend light to our will, with lenses and mirrors, but in this video, we will explore what we can learn from light.
How do lenses work? How do they form images? Well, in order to understand how optics work, we have to understand the physics of light. In this episode of Crash Course Physics, Dr. Shini talks to us about optical instruments and how they make magnification possible.
So we've all heard of relativity, right? What is relativity? How does it relate to light? Motion? In this episode of Crash Course Physics, Dr. Shini talks to us about perspective, observation, and how relativity is really weird.
What is light? That is something that has plagued scientists for centuries. It behaves like a wave and a particle. Is it both? In this episode of Crash Course Physics, Dr. Shini introduces the idea of quantum mechanics and how it helps us understand light. Also, there's this thing called the ultraviolet catastrophe.
In the mid-1800s, Scottish physicist James Maxwell thought something interesting was going on with electric fields, so he decided to assemble a set of equations that held true for all electromagnetic interactions. In this episode of Crash Course Physics, Dr. Shini talks to us about Maxwell's Equations and how important they are to our understanding of Physics. She discusses the ray model, reflection and refraction, ray diagrams, and converging and diverging lenses.
Sunlight, moonlight, torchlight, and flashlight all come from different places, but they’re the very same thing: light. It’s what makes it possible for us to see the world around us, so it’s worth a close, hard look. For instance, how does light travel? When you flip that switch in the bathroom to brush your teeth, how does light move from the light bulb, to the mirror, and into your eyes? This video explores the ray model, reflection and refraction, diverging and converging lenses, and ray diagrams.