Home > Flashcards > Physics > Light 3 - Total Internal Refle

Details Title: Light 3 - Total Internal Refle Description: Revision of TIR, critical anngle etc. Total Flash Cards: 5 Created: 09/25/2005 06:26:53	To study from this set of flash cards, or to create your own your own study flash cards, register HERE. If you are already a registered user, CLICK HERE.
Cards Term What is the critical angle? Definition The critical angle is angle of incidence that produces an angle of refraction of 90o. link to the page on this in Cyberphysics Term What is the (approx) critical angle of glass? Definition 42o This varies with the type of glass - denser glass will have a smaller critical angle. link to the page on this in Cyberphysics Term What has the smallest critical angle? Definition Diamond - (24.4o) link to the page on this in Cyberphysics Term When does total internal reflection occur? Definition Total internal reflection occurs when: - a ray of light is incident upon a boundary with an optically rarer medium (one that makes it speed up) and - the angle of incidence is greater than the critical angle. link to the page on this in Cyberphysics Term Give two uses of total internal reflection Definition Any of the following: - In an endoscope or fibroscope - For communication - cable TV uses fibre optic cable - In prismatic binoculars - Bicycle reflectors link to the page on this in Cyberphysics