The strange, special effect 3-D glasses bring is due to a "trick" our brains play on our eyes when we view things through 3-D glasses. Our eyes are naturally about 2 inches apart and each eye sees objects from a slightly different perspective. Using 3-D glasses, our brain actually tricks our eyes into thinking that we are seeing the same image and it creates the three-dimensional appearance we see using 3-D glasses.
Red-green 3-D glasses use a combination of red and green color to give the illusion of a 3-D image on the screen. It is mainly used for television special effects and has been used in older 3-D movies. Two images are displayed on the television screen; one image is in red and the other is in green. When you wear 3-D green glasses and focus on the screen, your eyes will blend the image and give the appearance that it is in 3-D.
If you are interested in viewing comic books, magazines and other print in 3-D, consider getting 3-D blue gGlasses. These allow you to view anaglyph images clearly and they can also be used to view television and movies, so they are versatile and can be used in different situations. You can also make a really fun fashion statement by wearing 3-D glasses, even when you are not in front of a TV screen or reading a 3-D comic book.
Make class time fun for your students and challenge them with making 3-D glasses. This is a great way to teach science to students and have fun at the same time. Thanks to advances in technology, many laptops are available with 3-D capacity without the need for using special glasses. Check with your local retail store to see if it is available in your area and to learn the functions of the 3-D laptop screen.