Figure 2-40. Reflection of point of light in mirror.

TM 9-258

c. Regardless of where the observer stands, if he

by a cutout letter F covered with luminous paint (fig 2-41).

Light from every point on the letter sends out

can see the reflection of the point of light in the mirror, its

incident rays which are reflected by the mirror. Each

apparent position is unchanged. This holds true whether

incident ray and reflected ray obeys the laws of reflection

he walks forward along his line of sight without affecting

and their paths can be plotted accordingly. As the result,

the angles of incidence and reflection of the ray or steps

the entire image formed by the combination of this

to either side changing his line of sight and the angles of

infinite number of images of individual points of light is

incidence and reflection (EYE"B", fig 2-40). It is the

reflected to the eye of the observer. The observer,

object (source of light) that is reflected and the apparent

looking along the paths of the reflected rays, sees the

position of its reflection is changed only when the

image formed by the points of light. The image he sees

position of the object or of the mirror is changed.

d. Now, assume that the light source is replaced

appears to be in back of the mirror as an erect, reverted

2-28