"You're spending an afternoon browsing the exhibits at an art museum. If you're anything like me, you'd probably appreciate the art a lot more if you could bring someone along that could explain the history and nuances of the pieces on display. Now imagine pointing a device at the painting and seeing it morph into a dynamic video giving you all the information you wanted about the art. Welcome to augmented reality.
Virtual reality replaces the real world with an artificial, digital environment. In contrast, augmented reality alters your view of the real world by layering it with associated digital information. Augmented reality uses your device's camera to view the immediate environment and display media when it sees an object it recognizes. It has been utilized as a marketing and informational tool by many industries. Using an augmented reality app, you can point your device at an advertisement in a magazine and get detailed product demonstrations. Aim it at a sign outside a house for sale and get an after hours virtual walk-through the property. There are also many ways augmented reality can be used in education."
Via John Evans