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 More
What 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 an electronic tag attached to an...
Read More
Who Sent the First Radio Message?
Who Sent the First Radio Message? Guglielmo Marconi is usually credited with sending the first radio message. Marconi was born in Bologna, Italy, in 1874 to an Italian...
Read More
Why Do Cats Purr?
Why 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 More
What Makes a Glowworm Glow?
What 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...
Read More