Intro to Geometric Optics and Plane Mirror Reflection Flashcards
Geometric optics
The use of light rays to determine how light behaves when it strikes objects
3 materials used for the transmission of light
Opaque, translucent and transparent
Transparent
Material which transmits ALL or MOST incident light, resulting in the objects behind it being seen clearly.
Translucent
Material which transmits SOME light but which absorbs or reflect the rest; the object is not clearly seen through it but light is getting through
Opaque
Material which does not transmit any light; objects cannot be seen at all
Reflection
The bouncing back of light from a surface
Incident ray
The incoming ray that strikes the surface of a mirror, lens, or object
Reflected ray
The ray which bounces off of the reflective surface
The normal
The line which is perpendicular to the surface of the object at the point where the incident ray strikes it
Angle of incidence
The angle between the incident ray and the normal
Angle if reflection
The angle between the reflected ray and the normal
Laws of reflection
The angle of incidence equals the angle of reflection
The incident ray, reflected ray and the normal all lie within the same plane
Specular reflection
A smooth surface that created a sharp and clear reflection.
Diffuse reflection
A rough surface that does not procedure a clear reflected image
Qualitative features if reflected images
S alt A ttitude L ocation T ype
Size
Small, same and larger
Attitude
Upright or inverted
Location
Closer, same, further away
Real
An image which projects itself on a specific spot, leading to it being in focus ONLY at that point
Virtual
A perceived image which does not come directly from the object, OR which gives a false perception as to the location of the actual object
