Optics Flashcards
What is the point of incidence?
Where the incident Ray hits the reflecting or reflecting surface
What is the angle of incidence?
Angle between the incident ray and the normal
What is the normal?
The line drawn from the point of incidence perpendicular to an optical device
What is the reflected ray?
A Ray of light that bounces off a reflecting surface
What is the angle of reflection?
The angle between the reflected ray and the normal
What is refraction
The bending of light as it travels from one material into another
What is the principal focus
The position where are reflected parallel rays come together
What is the principal axis
A line through the center of a mirror or lens that passes through the principal focus
What is the focal length
The distance from the principal focus to the middle of a mirror Or lens
What is the incident Ray?
A ray of light that travels toward a reflecting or refracting surface
What are 3 uses of concave mirrors
Headlights,dentists,microscopes
What are three uses for convex mirrors?
Car mirrors, sunglasses, security in stores
Describe a convex lens?
-bulge outward, causing light rays to come together
Describe concave lenses
-Caved inwards, causing light rays to diverge
The law of reflection states that….
Angle of incidence=angle of reflection
