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Have you ever heard of an encyclopedia? An encyclopedia is a special book or collection of books that provides information on a wide range of topics. For example, you can find answers to everything you wonder about animals, history, science, countries, or famous people in encyclopedias. These books present information in an organized manner, usually alphabetically or grouped by subject, making it easy for you to find the knowledge you need!How Did Encyclopedias Originate?Encyclopedias date back

A sundial is an ancient instrument that tells time based on the position of the sun in the sky. By observing the movement of its shadow, you can determine the time of day. It was used to measure time before the invention of mechanical clocks.StructureA sundial consists of a flat dial marked with hour lines and a central rod called a gnomon. The gnomon casts a shadow onto the dial, and the position of this shadow indicates the time. The sundial can be made from stone, metal, or wood. The height a