What is the temperature of a burner on an electric stove when its glow is barely

Question

What is the temperature of a burner on an electric stove when its glow is barely visible at a wavelength of 722 nm? Assume the burner radiates as an ideal blackbody and that 722 nm represents the peak of its emission spectrum. An electron travels parallel to the x-axis with the wave functions, wave number k, and energy conditions shown below. Find the reflection and transmission coefficients for the electron at the potential energy step at x = 0. Show all mathematical constraints and steps. psi_1 (x) = A exp (ik_1 x) + B exp (-ik_1 x) for x lessthanequalto 0 psi_2 (x) = C exp (ik_2 x) + D exp (-ik_2 x) for x greaterthanequalto 0

Explanation / Answer

5. y_peak T = constant

From Wien's displacement Law,

constant = 2.898 x 10^-3 m. K

putting values,

(722 x 10^-9) (T) = 2.898 x 10^-3

T = 4013.85 K .....Ans

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