How Does polarized Light Behave and What is 3-D?
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HOW DOES POLARIZED LIGHT BEHAVE AND WHAT IS 3-D? Filtering Out the Waves
description
How Does polarized Light Behave and What is 3-D?. Filtering Out the Waves. What is Polarized Light?. Light travels in waves Light waves are transverse Sound waves are longitudinal. Longitudinal. Transverse. How do light waves move?. Light is non-polarized and vibrates in all directions - PowerPoint PPT Presentation
Transcript of How Does polarized Light Behave and What is 3-D?
HOW DOESPOLARIZEDLIGHT BEHAVE AND WHAT IS3-D?
Filtering Out the Waves
WHAT IS POLARIZED LIGHT?• Light travels in waves• Light waves are transverse• Sound waves are longitudinal
Transverse
Longitudinal
How do light waves move?• Light is non-polarized and vibrates in all
directions• It has horizontal and vertical
movements
How Does Polarization Happen?• When a plane of light is selected or
filtered out, it becomes polarized• Glare from the water or road is partially
polarized from the reflection of light
Using Polarized Sunglasses• Polarizing filters select a vertical plane
of light movement
Polarizers Can Block Out Light
• Two polarizing filters, rotated 90° opposite of each other can completely block light
ANAGLYPHONLINE ACTIVITY
Your Turn…
How Does 3-D Viewing Work• Our eyes are set about 2.5 inches apart• Each eye takes a slightly different view
of the same object
3-D Viewing Continued
• The brain combines the similarities of the object
• It also adds up the differences that each eye observes
• The 2-eye viewing combines to form a 3-D stereo image
How Does 3-D Stereograms or Anaglyph Work?
• 3-D Stereograms require the person to focus past the page or computer screen
• Put your nose close to the page or computer screen and slowly move away till you can view the 3-D object
Anaglyphs Continued• Requires glasses with a
red left lens and a cyan right lens
• The left eye only views an image that selects the red from the photo
• The right eye only views an image that selects the cyan from the photo
Anaglyphs Continued
• The images on the photo are slightly offset• Your brain takes the red and cyan images with
slightly different views and combine to form a binocular stereopsis
Anaglyph Continued
How Do 3-D TV and Movies Work?
• A 3-D slide show or movie has one horizontally polarized view and another vertically polarized view.
• The viewer wears polarizing eyeglasses with the lens axes also at right angles.
How Do 3-D TV and Movies Work?
Homework
• Review Chapter 27 and 28• Answer Ques. 20, 22, 23, 46, 64
