Refraction and reflection Flashcards
1
Q
What is an optic fibre
A
An optic fibre is where the light is at a critical angle so stops refracting and reflects (total internal reflection)
2
Q
What is a medical use of optical fibres
A
Endoscopes
3
Q
What is a non medical use of optical fibres
A
Cable TV or broadband
4
Q
What is refraction
A
Refraction is the bending of light as it passes through one material into another ,light from air into glass= bends towards the normal
Glass into air speeds up = bends away from normal
5
Q
What does light travel in
A
A straight line (Rays)
6
Q
What do the angle of incidence and the angle of reflection have in common
A
They are the same
7
Q
What is transparent material
A
It lets almost all light pass through
8
Q
What is translucent
A
Only allows some light through
9
Q
What is opaque
A
Does not allow light through
