He found that there is a constant relation between the angle of incident ray and angle of refracted ray. In physics, refraction is the change in direction of a wave passing from one medium to another or from a gradual change in the medium. Refraction and Snell's law. THANK When shone, as a beam through a prism, white light gets refracted and exits in the form of a spectrum of colours; The white light enters, gets refracted and then when exiting the prism gets refracted again. The law of reflection states that, on reflection from a smooth surface, the angle of the reflected ray is equal to the angle of the incident ray. Hope you liked the video. Email. This is the currently selected item. Incoming and reflected lights have same angle with the surface. They show regular and diffuse reflection of light from given surfaces. Refraction and light bending. Snell's law example 2. Incident ray, coming from one medium to the boundary of another medium, is refracted with a rule derived from a physicist Willebrord Snellius. Light waves change speed when they pass across the boundary between two substances with a different density, such as air and glass. Refraction. Go to the terrace of a tall building in the evening, which has at least 6 floors. Created By: Rose Tomson and Hannah Abraham Examples of Refraction Refraction metal chair leg Thank you for watching this presentation. Reflection of Light Reflection is the turning back of the light from the surface it hits. If the surface reflects most of the light then we call such surfaces as mirrors. Examine the given pictures below. Refraction at plane surfaces. We hope you learned about reflection and refraction from our presentation and about how they are different. Google Classroom Facebook Twitter. Refraction can be used to show the true make up of white light. The Laws of Refraction Incident ray, reflected ray, refracted ray and the normal of the system lie in the same plane. ... Refraction is the bending of light (it also happens with sound, water and other waves) as it passes from one transparent substance into another. Refraction of light. BEST WAY OF EXPERIENCING REFRACTION PHYSICALLY WITH YOUR VERY OWN EYES Works really well specially if you are in an urban area. This bending by refraction makes it possible for us to have lenses, magnifying glasses, prisms and rainbows. Light - Light - Reflection and refraction: Light rays change direction when they reflect off a surface, move from one transparent medium into another, or travel through a medium whose composition is continuously changing. Refraction and light bending. Refraction of light is the most commonly observed phenomenon, but other waves such as sound waves and water waves also experience refraction. Refraction in water. Snell's law example 1. Refraction through glass slab.