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Don't know your elbow from your accelerator? Don't be put off. Our Large Hadron Collider quiz isn't for experts only. Learn a little about the particle accelerator and what it does with our LHC quiz.
If you want to see a hologram, you don't have to look much farther than your wallet. But the most impressive holograms are large scale and illuminated with lasers or displayed in a darkened room with carefully directed lighting. Learn how a hologram, light and your brain work together make clear, 3-D images.