mirrors why bother?

11
Mirrors why bother? see you rse lf telescope s car s Projector s/TV mag ic

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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). - PowerPoint PPT Presentation

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Page 1: Mirrors  why bother?

Mirrors why bother?

seeyoursel

f

telescopes

cars

Projectors/TV

magic

Page 2: Mirrors  why bother?

3 types of mirrors

Flat (plane, infinite)

Concave (caved in, converging)

Convex (vexed out, diverging)

Page 3: Mirrors  why bother?

Plane Mirrors

Is this kind of plane mirror possible?

Page 4: Mirrors  why bother?

Curved Mirror Terms

C f

principal axis

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

The Center of Curvature or radius “r”

Page 5: Mirrors  why bother?

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

Page 6: Mirrors  why bother?

Virtual images are posers!

Page 7: Mirrors  why bother?

Real images are inverted always!

Page 8: Mirrors  why bother?

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

Page 9: Mirrors  why bother?

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

Object very close: virtual, upright, larger

Page 10: Mirrors  why bother?

Summary: Convex Mirrors

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

Page 11: Mirrors  why bother?

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