Physics Chapter 14-Reflection and Refraction by https://padlet.com/ronaldoyee_161/29sd6gqtxq60 en-us 2016-11-10 09:08:46 UTC 2026-02-21 03:16:23 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Lightdecrease.png Speed of light ronaldoyee_161 https://padlet.com/ronaldoyee_161/29sd6gqtxq60/wish/136654209 The speed of light in vacuum is 300000000 m/s in a vacuum. 
The speed of light is slower in other medium compared to vacuum. 
Refractive Index of a particular medium = Speed of light in vacuum / Speed of light in the particular medium]]> 2016-11-10 09:14:52 UTC https://padlet.com/ronaldoyee_161/29sd6gqtxq60/wish/136654209 Snell's law ronaldoyee_161 https://padlet.com/ronaldoyee_161/29sd6gqtxq60/wish/136656894 n1 * sin(i) = n2 * sin(r)]]> 2016-11-10 09:29:24 UTC https://padlet.com/ronaldoyee_161/29sd6gqtxq60/wish/136656894 Critical angle ronaldoyee_161 https://padlet.com/ronaldoyee_161/29sd6gqtxq60/wish/136664880 The critical angle is the angle of incidence when the angle of refraction is the largest. i.e. when the angle of refraction is 90° ]]> 2016-11-10 10:04:56 UTC https://padlet.com/ronaldoyee_161/29sd6gqtxq60/wish/136664880 Conditions for critical angle ronaldoyee_161 https://padlet.com/ronaldoyee_161/29sd6gqtxq60/wish/137171067 A light ray must be traveling from a denser medium to a less dense medium.
If the angle of incidence is larger than the critical angle, total internal reflection occurs. i.e. the rays will not exit the water]]> 2016-11-13 07:19:55 UTC https://padlet.com/ronaldoyee_161/29sd6gqtxq60/wish/137171067 Angle of incidence and angle of refraction ronaldoyee_161 https://padlet.com/ronaldoyee_161/29sd6gqtxq60/wish/137171333 The angle of incidence is the angle produced by the light source.
The angle of refraction is the angle produced after the light bent.]]> 2016-11-13 07:29:02 UTC https://padlet.com/ronaldoyee_161/29sd6gqtxq60/wish/137171333 Total internal reflection application ronaldoyee_161 https://padlet.com/ronaldoyee_161/29sd6gqtxq60/wish/137171425 When you shine a laser light through an S-shape piece of plastic, the light ray will follow the shape of the plastic and will not leave the plastic because of total internal reflection. 
An endoscope is a medical device used to examine the inside of a person's body. It consists of a tube containing glass fibres, and it is typically inserted through your nostrils. Light passes through the fibres through total internal  reflection, and images of the inside of your body are then displayed on a video screen.
Light can also travel down fibre-optic cables without losing its brightness.  Large amount of data from internet traffic and phone calls are transmitted long distances through fibre-optic cables that are laid through the sea
 
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