Mirrors why bother?

seeyoursel

f

telescopes

cars

Projectors/TV

magic

3 types of mirrors

Flat (plane, infinite)

Concave (caved in, converging)

Convex (vexed out, diverging)

Plane Mirrors

Is this kind of plane mirror possible?

Curved Mirror Terms

C f

principal axis

focal point= r/2(horizontal light focuses here)

The Center of Curvature or radius “r”

Real vs. Virtual Images

Virtual Image: Light reflects off mirror but diverges (scatters) so it appears on the opposite side of mirror(you see it, but only in your mind- it’s not there!

Real Image: Light from an object reflects off mirror, converges (focuses) back on same side of mirror(you see it and can feel it or re-project it)

Real Image

Virtual Image

Object

Object

Virtual images are posers!

Real images are inverted always!

3 types of curved mirror pictures

Convex object anywhere

Concave- object closer than focal pt.

Concave- object further than focal pt.

C f C fC f

Summary: ConcaveObject far from mirror: real, inverted, smaller

Object very close: virtual, upright, larger

Summary: Convex Mirrors

No matter where you put the object,….Only get……virtual, upright, smaller images

The end- see it again on my web site!Hubble Telescope