Answered: 2. The German physicist Max Planck used…

2. The German physicist Max Planck used the idea that atoms and molecules in a body act like to absorb and emit radiation.

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter29: Introduction To Quantum Physics

Section: Chapter Questions

Problem 11CQ: Why are UV, x rays, and rays called ionizing radiation?

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Concept explainers

Wien's displacement law

Students often get confused between Wien's displacement law and Planck's radiation law. Although both are historically related, yet they are conceptually different. Planck's law helps determine the spectrum of a blackbody, while Wien's law determines the relationship between peak wavelength and temperature.

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2. The German physicist Max Planck used the idea that atoms and molecules in a body act
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to absorb and emit radiation.

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Why are UV, x rays, and rays called ionizing radiation?
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7.Why did Max Planck suggest that light had particle-like properties? A.Blackbody radiation could not be explained using the wave properties of light. B.The speed at which light travels through a vacuum could not be explained using its wave properties. C.Hydrogen’s emission line spectrum could not be explained using the wave properties of light. D.The way light travels through different mediums could not be explained using its wave properties.
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1. Based on Planck's theory of black body radiation, the radiant spectral emittance is given in the following equation : 2nhc² n(2) hc 25 AkgT) – 1 where lamda is the wavelength, h is Planck's constant, kB is Boltzmann's constant, c is the speed of light, and T is the temperature on the Kelvin scale. Assuming T is constant, find the optimal wavelength equation.
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