What are the wavelength and the corresponding photon energy (in electron-volts) of the primary light emitted by an ideal blackbody at each of the following temperatures?
(c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ? s, 1 eV = 1.60 × 10-19 J, and the constant in Wein's law is 0.00290 m ? K)
(a) 400°C?
(b) 800°C?
(c) 1200°C?
(a) 4.31 μm, 0.288 eV (b) 2.70 μm, 0.459 eV (c) 1.97 μm, 0.631 eV
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The units on the Hubble constant are ____________________
Fill in the blank(s) with correct word
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What will be an ideal response?