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Mirrors why bother? . 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. focal point= r/2 (horizontal light focuses here).

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Mirrors why bother
Mirrors why bother?


3 types of mirrors
3 types of mirrors

Flat (plane, infinite)

Concave (caved in, converging)

Convex (vexed out, diverging)


Plane mirrors
Plane Mirrors

Is this kind of plane mirror possible?


Curved mirror terms
Curved Mirror Terms

focal point= r/2

(horizontal light focuses here)

principal axis

C

f

The Center of Curvature or radius “r”


Real vs virtual images
Real vs. Virtual Images

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)

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

Object

Virtual Image

Object




3 types of curved mirror pictures

C

f

3 types of curved mirror pictures

Concave-

object further than focal pt.

Concave-

object closer than focal pt.

Convex

object anywhere

C

f

C

f


Summary concave
Summary: Concave

Object far from mirror: real, inverted, smaller

Object very close: virtual, upright, larger


Summary convex mirrors
Summary: Convex Mirrors

No matter where you put the object,….

Only get……virtual, upright, smaller images



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