1.4 The endoscope Flashcards
1
Q
What is the critical angle?
A
The angle of incidence of a light ray in a transparent substance which produces refraction along the boundary.
2
Q
When does total internal refraction occur?
A
When the angle of incidence in a light ray in a transparent substance is greater than the critical angle
3
Q
What is an endoscope used to see?
A
The inside of the body directly
4
Q
What is an optical fibre?
A
A very thin flexible glass fibre
