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This image is an anaglyph in which a stereo image pair is combined into a single image using colour to separate the two views. To see the 3D stereo effect, you will need to use red green colour filter glasses (red for your left eye and green for your right eye). Such glasses can be obtained from your optometrist or specialty supplier. It is worth obtaining high quality anaglyphic glasses to achieve the best possible sense of depth. Cheap filters can often be found in novelty 3-D books. SEE HOW ANAGLYPHS ARE MADE.
Stereoscopic view of Gold (Au) atoms in crystal array. Gold is a precious metal whose atoms are arranged in closely packed hexagonal layers. First and fourth layers are in line with each other. This gives what is known as a face centred cubic pattern or cubic close packing. Gold is unreactive and a very good conductor. It is used in jewellery.