Amount of Energy 0.05 0.04 0.03 0.02 0.01 0.00 CHAPTER 2 The Global Ledger of Heat Energy Spectrum of an Orange 37 17 0.40 0.45 0.50 0.55 0.60 0.65 0.70 Wavelength (microns) FIGURE 2.4 The spectrum of the intensity of reflected light from an orange as a function of wavelength (in microns). An instrument called a spectrophotometer collected these data (courtesy of Eugene Clothiaux). Ins hydrologists Amount of Energy 0.05 0.04 0.03 0.02 0.01 Spectrum of a "Mystery" Fruit 0.00 0.40 0.45 0.50 0.55 Beginning of the "plateau" of intensity of visible light 0.60 0.65 0.70 Wavelength (microns)