What Does a Radio Uses to Carry Sound?
Does radio actually carry sound? Yes, radio uses radio waves to carry sound from one place to another. In radio broadcasting, plays, music or other sounds are turned...
Read MoreWhat Is RFID and How Does It Work? Radio-frequency identification (RFID) is a technology that uses communication via radio waves to exchange data between a reader and...
Read MoreWhy Do Cats Purr? Most people think that cats purr to show pleasure or contentment. Purring is a kind of low continuous rattling hum, but it has nothing to do with a...
Read MoreWhat Makes a Glowworm Glow? A glowworm uses its glow to attract food and to burn off its waste. Its tail glows because of bio luminescence, which is a reaction between...
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