Refraction of Light and Apparent Sunrise and Delayed Sunset Explained

In this video, we learn about the science behind apparent sunrise and delayed sunset. We explore the phenomenon of refraction of light and its effects on the direction and speed of light as it passes through different mediums. Through a simple experiment using a movable laser, glass, water, and boiling water, we discover the concept of refractive index and Snell's law. We also witness the phenomenon of total internal reflection when the angle of incidence is greater than the critical angle.