Reflections and Mirrors Flashcards
How light reflects off a surface into your eyes determines the reflection that you see. When you look down at the surface of a lake, you see an upright reflection of yourself
a French scientist developed a method of coating glass with silver
Jean Foucault
The planar and angle relationships are known as
Law of Reflection
parallel light rays are
reflected in parallel.
specular reflection
the scattering of light off a rough surface
diffuse reflection
It is a flat, smooth surface from which light is reflected by specular reflection.
plane mirror
It is a source of light-rays that are to be reflected by a mirrored surface.
Object
It is a type of image formed by diverging light rays and is always on the opposite side of the mirror from the object.
virtual image
Images of real objects produced by plane mirrors are always
virtual images
It has a reflective surface, the edges of which curve toward the observer.
concave mirror
it is the straight line perpendicular to the surface of the mirror that divides the mirror in half
principal axis
the point where incident light rays that are parallel to the principal axis converge after reflecting from the mirror.
focal point
It is the position of the focal point with respect to the mirror along the principal axis and can be expressed as f= r/2
focal length
The focal length for a concave mirror
positive
An image that is formed by the convergence of light rays.
real image
It was developed by a Scottish astronomer, James Gregory
Gregorian telescope
