Write the applications of total internal reflection
Answers
Answer:
The phenomenon of total internal reflection of light is used in many optical instruments like telescopes, microscopes, binoculars, spectroscopes, periscopes etc.
Explanation:
The brilliance of a diamond is due to total internal reflection. Optical fibre works on the principle of total internal reflection.
Total internal reflection is also used in optical fibres. An optical fibre consists of an inner core of high refractive index glass and surrounded by an outer cladding of lower refractive index.
When light is introduced into the inner core at one end, it will propagate along the fibre in a zigzag path undergoing a series of total internal reflections.
Optical fibres are useful for getting light to inaccessible places. They are used in many important practical applications. This includes fibre optic diagnostic tools in medicine and fibre optic cables in telecommunications.
An endoscope is an instrument made of a fibre optic cable. It is used by doctors to see the inside of the human body such as the stomach and the duodenum.
In telecommunications, copper cables are now replaced by fibre optic cables in the telephone system.
Multiple signals can be sent at high speeds through bundles of fibres by using flashes of light from a laser.