blackbody is a substance that absorbs radiation fall wavelengths and radiates in a continuous pectrum at all wavelengths

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Blackbody Is A Substance That Absorbs Radiation Fall Wavelengths And Radiates In A Continuous Pectrum At All Wavelengths 1 (34.1 KiB) Viewed 11 times

blackbody is a substance that absorbs radiation fall wavelengths and radiates in a continuous pectrum at all wavelengths. It is given the name lackbody because an object that absorbs light at wavelengths appears black to the human eye. y the end of the 19th century, several properties of ackbody radiation had been established. First, the otal intensity I (the average rate of radiation of nergy per unit surface area) emitted from a lackbody was shown to be proportional to the ourth power of its temperature: I=oT¹ This is called the Stefan-Boltzmann law for a lackbody. The constant of proportionality dis nown as the Stefan-Boltzmann constant and was etermined to be -5.67 x 10 W/(m²K) it had also een discovered that the wavelength at which the diation intensity was maximum varied inversely th temperature. This result, known as the Wien splacement law, is written AT 2.90 x 10 m-K, here A is the wavelength with the greatest diated intensity Part A Consider a blackbody that radiates with an intensity Is at a room temperature of 300 K. At what intensity I will this blackbody radiate when it is at a temperature of 400 K? Express your answer in terms of I ₂- 3.167 ✔Correct Part B Previous Answers At what wavelength A would the intensity of blackbody radiation be at a maximum when the blackbody is at 2900 K? Express your answer in nanometers to two significant figures. View Available Hint(s) Au ΜΕ ΑΣΦ ^ a 13 ? nm