With what type of electromagnetic radiation would you observe:A. A star with a temperature of 5800 K?B. A gas heated to a temperature of one million K?C. A person on a dark night?
Question
With what type of electromagnetic radiation would you observe:A. A star with a temperature of 5800 K?B. A gas heated to a temperature of one million K?C. A person on a dark night?
Solution
A. A star with a temperature of 5800 K would be observed with visible light. This is because the peak wavelength of a star with this temperature falls within the visible light spectrum, according to Wien's Displacement Law.
B. A gas heated to a temperature of one million K would be observed with X-rays. At such high temperatures, the gas would emit high-energy photons, which are characteristic of X-rays.
C. A person on a dark night would be observed with infrared radiation. Humans, like all warm-blooded animals, emit heat in the form of infrared radiation, which can be detected in the dark.
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