incidence wave
arrow points in
Normal
Dotted line
Reflecting wave
Arrow goes out
Normal
An imaginary line perpendicular (90) to the reflecting surface, used to measure of for reference.
Incidence (incoming) wave
Wave approaching the new medium
Reflecting wave
Redirected wave, leaving the new medium
The angle of incidence
Is the angle of the incoming wave with respect to the “normal”
The angle of reflection
is the angle of the reflected wave with the respect to the “normal”
Light reflected off a mirror following the Law of Reflection:
Angle or incidence= angle of reflection
These angles are measured from normal, a line perpendicular to the mirror.
What can’t you see your reflection in all flat surfaces?
Even seemingly flat surfaces may not perfectly flat.
Regular reflection
Surfaces produces a reflected image.
Reflected rays are parallel
Diffuse reflection
Surfaces that we can see but does not reflect an image.
Law of reflection still happening but the reflected rays are not parallel.
Ho
Height of object
Hi
Height of image
Do
Distance to object
Do
Distance to image
Upright
Arrow facing up
Image is right side up
Inverted
Arrow down
Upside down
Same distance
Do=Di
Same size
ho=hi
Virtual ray
A line that represents the path of light that appears to come from a certain point but does not actually pass through it
