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00s 000E + 0osz 0007 + 000L + 006 008 Infrared 004 009 Ultraviolet A measure of the intensity ACTIVITY 7 • Light and Spectra %3D Blackbody curve for temperature = 2000 K 1.4- 10- 0.8- 0.6- 0.2- Wavelength A (nm) FIGURE 7.4 9. Assume that the temperature of the filament in the bulb at its dimmest was around 2000 K, so that its spectrum would look like the curve in Figure 7.4. Explain how we were still able to see some red in the spectrum of the incandescent bulb, even though the peak of the spectrum is well outside of the visible wavelength region.

00s 000E + 0osz 0007 + 000L + 006 008 Infrared 004 009 Ultraviolet A measure of the intensity ACTIVITY 7 • Light and Spectra %3D Blackbody curve for temperature = 2000 K 1.4- 10- 0.8- 0.6- 0.2- Wavelength A (nm) FIGURE 7.4 9. Assume that the temperature of the filament in the bulb at its dimmest was around 2000 K, so that its spectrum would look like the curve in Figure 7.4. Explain how we were still able to see some red in the spectrum of the incandescent bulb, even though the peak of the spectrum is well outside of the visible wavelength region.

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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+ 000 000 000- 006 Infrared -00- + 009 00- - 00 Ultraviolet A measure of the intensity 6 ACTIVITY 7 Light and Spectra Blackbody curve for temperature = 2000 K 1.4- 1.0- 0.8- 0.4+ Wavelength 2 (nm) FIGURE 7.4 9. Assume that the temperature of the filament in the bulb at its dimmest was around 2000 K, so that its spectrum would look like the curve in Figure 7.4. Explain how we were still able to see some red in the spectrum of the incandescent bulb, even though the peak of the is well outside of the visible wavelength region. spectrum 10. If we could see at infrared wavelengths, would the bulb appear brighter or dimmer? 11. There are many stars that have surface temperatures in the 3500-2000 K range. Would they appear bright or dim to us? Explain your answer by contrasting a 3500 K star with a 2000 K star.
Transcribed Image Text:+ 000 000 000- 006 Infrared -00- + 009 00- - 00 Ultraviolet A measure of the intensity 6 ACTIVITY 7 Light and Spectra Blackbody curve for temperature = 2000 K 1.4- 1.0- 0.8- 0.4+ Wavelength 2 (nm) FIGURE 7.4 9. Assume that the temperature of the filament in the bulb at its dimmest was around 2000 K, so that its spectrum would look like the curve in Figure 7.4. Explain how we were still able to see some red in the spectrum of the incandescent bulb, even though the peak of the is well outside of the visible wavelength region. spectrum 10. If we could see at infrared wavelengths, would the bulb appear brighter or dimmer? 11. There are many stars that have surface temperatures in the 3500-2000 K range. Would they appear bright or dim to us? Explain your answer by contrasting a 3500 K star with a 2000 K star.
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