Concept explainers
(a)
Interpretation:
The wavelength of maximum emission of a tungsten filament bulb at 2870 K and 3750 K needs to be calculated.
Introduction:
The Wein’s displacement Law states that the maximum wavelength in micrometers for the radiations of the blackbody is represented as follows:
Here, T is defined as the temperature in Kelvin as it is absolute temperature.
Stefan’s law states that the total quantity of heat energy released per second per unit area by a perfect blackbody is directly proportional/related to the fourth power of the absolute temperature of its surface given by the equation:
Et = aT4
Where a has a value of
(b)
Interpretation:
The total energy output of the bulb in terms of W/m3 needs to be determined.
Concept introduction:
The Wein’s displacement Law states that the maximum wavelength in micrometers for the radiations of the blackbody is represented as follows:
Here, T is defined as the temperature in Kelvin as it is absolute temperature.
Stefan’s law states that the total quantity of heat energy released per second per unit area by a perfect black body is directly proportional/related to the fourth power of the absolute temperature of its surface given by the equation:
Et = aT4
Where a has a value of
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Chapter 7 Solutions
Principles of Instrumental Analysis
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