1 / 13

Refraction and partial reflection

Refraction and partial reflection. Most of the light is refracted. air. glass. Less than 42. Total internal reflection. This is total internal reflection. air. glass. More than 42. The critical case. This is the border line case. air. glass. Critical angle = 42 0. Optical fibre.

vera-hanson
Download Presentation

Refraction and partial reflection

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Refraction and partial reflection Most of the light is refracted air glass Less than 42

  2. Total internal reflection This is total internal reflection air glass More than 42

  3. The critical case This is the border line case air glass Critical angle = 420

  4. Optical fibre out Glass fibre in Repeated total internal reflection

  5. The endoscope

  6. Endoscopy

  7. Using T.I.R - endoscope • Optical fibres are used to examine the stomach and lungs • A fibre carries light into the stomach and illuminates it • A second fibre carries the light from the stomach to a camera • Internal examination can be made

  8. An endoscope for examining ears

  9. Optical fibre can carry many signals

  10. Optical fibres for communication • Optical fibres carry signals in the form of light waves • Compared with copper wire • They can carry many different signals at the same time • There is less signal loss and less interference

  11. Using T.I.R. – right angle prisms T.I.R. here since the angle of incidence = 45o > C (42o)

  12. Periscopes This is used by cars towing caravans

  13. Cats eyes in the road

More Related