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# How Does 3D Work

Physics
by

## Sydney Mathis

on 5 November 2013

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#### Transcript of How Does 3D Work

How Do We View 3-D Images?
The average separation between human eyes is 2.5 inches-
“Binocular vision” (Levine and Johnstone) (“3D”) (Kirkland).
Sidenote
Before 3D movies, people used stereoscopes to see images with the factor of extra depth to them, in “relief” (“Stereoscope”) This invention that used two photographs taken from slightly different angles led to the invention of viewing a movie in 3D. Each eye viewed one of the images, while the angled lenses merged the images and when seen together, they formed a complete three dimensional picture.
Light and 3D
Two images are laid on top of each other, each of their wavelengths traveling at a different angle- one image travels vertically, and the other travels horizontally(Brain).
How Have the 3D Glasses Changed Through the Ages
How Does 3-D Work?
By Sydney Mathis and Christina Hogg
Polarized Glasses
3D Glasses and Light
The 3D glasses are polarized
Combines the two images laid on top of one another (Brain)
To test this, close your right eye and point your finger at an object. Now open your other eye and close your left eye. Notice that your finger no longer seems to be in the same place!
How Did That Happen!?!?
This is called parallax stereoscopy. *explain how each eye sees a different image*
3D imaging is seen passively through these glasses as well (GCN).
They limit the plane and path of the light rays, causing the image to have a factor of depth.
How Does 3-D Imaging Work?
3D imaging was created to give "the illusion of depth" by creating shadows (Race, Gale).
3D imaging was replicated in movies by recording two separate videos to imitate how our eyes see things (Kirkland).

The first type of 3D glasses made
Seen passively through these glasses,(GCN).
The glasses have one red and one blue lens to match the red and blue images shown on the screen
Red/Blue 3D Glasses
Stereoscope??
"Stereoscope" comes from the Greek word "stereos" meaning solid and "scopos" meaning watcher.
3-D Movies
3-D movies are made by filming the same thing from two separate angles
Filtered by the 3-D glasses you wear.
Fun Fact!
The first film that was shown in 3-D was The Power of Love in 1922; the audience wore red/green glasses to see the black and white silent film. (IMDb)
Latest technology glasses.
The 3D imaging is seen actively
These glasses work by alternating the flashing of the two images very quickly between our eyes (GCN)
Shutter glasses match refresh rate
Shutter Glasses
What is Refresh Rate?
http://quest.eb.com/images/132_1306935
http://quest.eb.com/images/102_556070
http://quest.eb.com/images/102_531179
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