01 Polarization.pptx

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describe how the

orientation

of

light

relates to

polarized

light

.

demonstrate how polarizing

filters

work.

explain how liquid crystal displays (LCD’s)

use polarized

light

.

describe how polarized

light

relates to

glare

.

distinguish between

linear

and

circular

polarized

light

.

connect

polarized

light

to

3-D movies

.

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Photons

Photons are NOT

different colors.

Different frequencies

stimulate your eyes to

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Polarizing Filters

Filters that make light

all the SAME orientation

Polarized Light

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http://www.enzim.hu/~szia/cddemo/edemo4.htm

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Window tinting, stained glass, semi-transparent film etc.

The more layers, the less light is transmitted.

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Vector Components of Light

√2

1

100%

70.7%

1

√2

1

√2

1

50%

70

.7%

(

50

%

)=

35

%

50%

70.7(

35%

)

=

25%

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ELECTROMAGNETIC

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Electromagnetic waves are formed when

an

electric field (shown as blue arrows)

couples with a

magnetic field (shown as

red arrows).

The magnetic and electric

fields of an electromagnetic wave are

perpendicular to each other and to the

direction of the wave

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LCD

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http://upload.wikimedia.org/wikipedia/commons/6/68/Waveplate.png

Half Wave Retarder

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Optical Wave

(Electromagnetic Wave)

Electric Wave

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Optical Wave

(Electromagnetic Wave)

Electric Wave

Magnetic Wave

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If a particular color gets twisted by

90°, that color of light will pass

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Figure 1. Medical

packaging with excessive

residual stresses (top)

and the same type of

package after annealing

has substantially reduced

stresses (bottom).

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Prince Rupert's Drops

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Prince Rupert's Drops

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Tempered Glass

The process of heat treating glass near the softening point

followed by rapid cooling to increase the mechanical and

thermal endurance of the glass. Tempered glass will shatter

into smaller pieces rather than breaking into larger, more

dangerous sections.

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Tempered Glass

The process of heat treating glass near the softening point

followed by rapid cooling to increase the mechanical and

thermal endurance of the glass. Tempered glass will shatter

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http://www.ericandleandra.com/photos/seattle/pages/40_leandra_skip_stone.html

Horizontal

Orientation

Vertical

Orientation

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http://www.chillimall.com/os/Accessories/106497.php

What orientation

of the filters in the

glasses would

block

horizontal

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http://www.ambrosiasw.com/~andrew/porschedriving/porschedriving-Images/4.jpg

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What is the orientation of the

GREEN

light?

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http://www.polarization.com/sky/Forrest_Mims_Polarized_sky_sunset_0804201_Dscn5167.jpg

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http://www.edimensional.tnmarketing.com.au/shop/catalog/product_info.php?products_id=53

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Circular

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http://upload.wikimedia.org/wikipedia/commons/6/68/Waveplate.png

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`

Linear Polarized

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`

Linear Polarized

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Linear Polarized

After ¼ Wave Retardation

Linear Polarized

`

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Linear Polarized

`

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Linear Polarized

`

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Linear Polarized

`

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Linear

Polarized

After ¼ Wave

Retardation

Linear

Polarized

After ¼ Wave

Retardation

Left Handed

Circular Polarized

Linear

Polarized

After ¼ Wave

Retardation

Linear

Polarized

After ¼ Wave

Retardation

Right Handed

Circular Polarized

¼ W

ave R

etard

er

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