The Past in 3D
April 23, 2007 12:42 PM Subscribe
3-D images have a longer history than you might imagine. Stereographs were invented in the mid-1800s, and quickly became very popular. You can still view 3-D pictures of the Civil War, cowboys and Native Americans, World War I, Egypt circa 1900, small town America of the 19th century, and zeppelin wrecks(!). How do you view them? You can buy or build a viewer (like this classic), but a better way might be to learn to do it with the naked eye (try this method if you have trouble). A new technique converts stereograms into "wiggle images" [prev.] the approach has been used on this picture of a downed zeppelin and this picture from the Civil War. Free software will let you make your own wiggle images.
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