OUTCOME
By the end of the lesson you will be able to explain how optical fibres are used in endoscopes and how these combined with lasers are used for keyhole surgery
Optical fibres use the refraction of light and total internal reflection to allow light to travel through small thin fibres.
This is utilised to make an image for endoscopes
LEARNING TASKS
Explain
What is refraction?
How do optical fibres use total internal reflection?
Watch the video on the endoscope used at the VET
Explore and elaborate
Observe the laser through a flow of water.
Explain what is happening
Evaluate
Try Qs 20-23 from the text