Questions and Answers
What is the main difference between AM and FM radio stations?
AM stations use frequency modulation while FM stations use amplitude modulation.
Who is credited with inventing wireless communication?
Guglielmo Marconi
How were the first digital wireless signals translated into words?
By translating long and short pulses into Morse code
What is the purpose of modulating the carrier wave in radio communication?
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What frequency range do AM radio stations typically operate within?
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How did Marconi establish the first transatlantic 'wireless communication'?
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What is the primary reason why UV-C rays are considered the most harmful?
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Why did Johann Wilhelm Ritter place silver chloride beyond the violet spectrum during his experiment on ultraviolet light?
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What is the closest type of ultraviolet light to visible light?
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Why did Wilhelm Conrad Roentgen call X-rays 'X'?
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What distinguishes gamma rays from other waves in terms of energy and wavelength?
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What is the main application of X-ray Screening Systems in airports, courthouses, and prisons?
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What range does the INFRARED (IR) spectrum cover?
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How does the wavelength of infrared (IR) light compare to that of visible light?
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What is the purpose of thermal imaging?
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How is visible light refracted by a prism?
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Why does Earth's atmosphere typically appear blue?
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What causes objects to change color as they heat up?
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