background preloader

Holograms

Facebook Twitter

Index page. Specular holography. How Holograms Work" ­If you want to see a hologram, you don't have to look much farther than your wallet. Th­ere are holograms on most driver's licenses, ID cards and credit cards. If you're not old enough to drive or use credit, you can still find holograms around your home. They're part of CD, DVD and software packaging, as well as just about everything sold as "official merchandise. " ­Unfortunately, these holograms -- which exist to make forgery more difficult -- aren't very impressive. You can see changes in colors and shapes when you move them back and forth, but they usually just look like sparkly pictures or smears of color. ­ On the other hand, large-scale holograms, illuminated with lasers or displayed in a darkened room with carefully directed lighting, are incredible.

If you look at these holograms from different angles, you see objects from different perspectives, just like you would if you were looking at a real object. Holograms have other surprising traits as well. Media Lab: Spatial Imaging Group. Dedicated to the Best in Commercial Holography. How to make a hologram at home. This article was taken from the April 2013 issue of Wired magazine. Be the first to read Wired's articles in print before they're posted online, and get your hands on loads of additional content by subscribing online. Holograms aren't difficult. "Hologram making is a tremendous little piece of physics, but so easy to do," says Colin Davidson, a physicist who makes hologram sensors in the Department of Chemical Engineering and Biotechnology at Cambridge University.

"It's exactly like developing a black and white photo, but far more realistic because it's in 3D. " But how to make one? Gather your Gear You'll need red-sensitive holographic plates or film (you can order it from companies such as London-based Colour Holographic), a red laser pointer, developing solution, stop solution and fixing solution -- all available from a photography shop. Set up your shoot Pick a small, shiny object such as a coin, a watch or a ring as the subject of your hologram. Holography & Holograms. How to Make a Hologram: 21 Steps. Edit Article Edited by Alecander, Ben Rubenstein, Nicole Willson, Krystle and 44 others It's easier to make a 3D hologram than you think.

In fact, each year thousands of hobbyists, students, and teachers make holograms at home and school. To make a hologram, you'll need some basic holography supplies and household items (budget about $100), a quiet and dark room, and about 30 minutes. Ad Steps 1Gather your holography supplies and household materials listed in the "Things You'll Need" section below. 14View your hologram after it is completely dried with a point source such as that from a projector, flashlight, spotlight, LED white light, or the sun. Tips Realize that vibrations and microscopic movement of even 1 millionth of a meter can ruin a hologram. Warnings Carefully read and follow all instructions for using your laser. Things You'll Need Holography SuppliesNote: Budget is around $100PFG-03M professional holographic film platesRed holography laser. Article Info.