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Ray Box Diagrams
Ray Box Diagrams
Total internal reflection:
This diagram shows the internal reflection of light rays within multiple prisms, and the angle of internal reflection.
Convex:
The faster the curve, the more
angled the rays will be, and
the closer the virtual focal point will be to the back of the mirror.
The slower the curve, the less angled the rays will be, and the further away the virtual focal point will be.
Concave:
The faster the curve, the more
angled the rays will be, and
the closer he focal point will be to the mirror.
The slower the curve, the less angled the rays will be, and the further away the focal point will be.
The diagrams show the following...
- The slower the curve, the longer the distance of the focal point.
- The faster the curve, the shorter the distance of the focal point.
- The angle of incidence is equal to the critical angle.
- The angle of incidence is equal to the angle of reflection.
- When light hits plane glass/water/clear plastic, it slows down. Looking inside the clear object, you can see that the light ray bends, and slows down inside the object. When the ray leaves the object and hits air again, it speeds up and goes parallel to the original ray.
- the object is equidistant to the image in the mirror.
- The image is the same size as the object.
Double concave:
The rays refract and reflect inside the glass, and when they exit the glass, they act as if they have been reflected by a normal concave mirror; having a virtual focal point rather than a focal point, and unlike a plane mirror, the light rays do not become parallel to the original unaffected rays.
Double Convex:
The rays refract and reflect inside the glass, and when they exit the glass, they act as if they have been reflected by a normal convex mirror; having a focal point rather than a virtual focal point, and unlike a plane mirror, the light rays do not become parallel to the original unaffected rays.