1. OPTICS
Branch of physics dealing with the nature and properties of light and vision.

2. Lenses

3. Convex lenses

4. Converging Lens c f
For a convex lens, any parallel rays of light that enter the lens will pass through the focal point on the right.

5. Focal Point

6. Convex Lens Convex Lens
A convex lens produces the same effects as a concave mirror
Convex lenses converge light.
Objects outside the focal point produce a real but inverted image
Objects inside of focal point virtual and upright images
Concave Lens Clip

8. Convex Lenses do ho c f hi di

10. Concave Lenses For a concave lens parallel rays diverge.
Concave lenses diverge light.

11. Concave Lens

14. Light which passes through the pupil opening, will enter the crystalline lens.
The crystalline lens is made of a fibrous, jelly-like material which has an index of refraction of 1.44.
The lens of the eye is able to change its shape and thus serves to fine-tune the vision process.
The lens is attached to the ciliary muscles. These muscles
relax and contract in order to change the shape of the lens.
By carefully adjusting the lenses shape, the muscles the eye can produce an image on the back of the eyeball.

15. Sight
Farsightedness or hyperopia is the inability of the eye to focus on nearby objects. The farsighted eye has no difficulty viewing distant objects.

16. Farsightedness or hyperopia is the inability of the eye to focus on nearby objects. The farsighted eye has no difficulty viewing distant objects.

19. The cure for the nearsighted eye is to equip it with a diverging lens; since the nature of the problem of nearsightedness is that the light is focused in front of the retina.

22. Law of Reflection
The angle of which the ray hits the surface is equal to the angle from which it is reflected.

24. Plane or Flat Mirror
The objects distance is equal to the images distance.
Image is upright
Dimensions of the image are the same as the dimensions of the object

26. Reflection
off of
Curved Surfaces

27. Curved Mirrors

28. Center&Radius of Curvature
Center of curvature of a lens or mirror is defined as the center
of the sphere of which the mirror is a part. (C = Center of curvature.)
Radius is the distance between the the mirror and the center

30. REVIEW