Farwi Resonance L Second Resonance La ↓ 162m Third Resonance La 0.85m Frequency First Resonance L₁ Second Resonance L₂ Unknown loca Third 59 cm 4 Resonance Ls 0.59m First Resonance L₁ Second Resonance L₂ 125 Frequency 12 cun 4 0.12m 10.21m Third Resonance Lavan Ha Wavelength Hz 1680 Wavelength λ (m) 0.34 m 0.34m Wavelength A (m) 0.18 m 16m Average Wavelength (m) Average Wavelength (m) Average Wavelength (m)

The air in a dark, smoky room often looks bluish when illuminated by white light. What creates this bluish appearance?

What is the smallest wavelength, in nm, of light that we can normally see?

The figure below depicts spectral reflectance measurements for three different materials:  a green leaf from a healthy plant, a sheet of shiny blue paper, and the palm of a human hand.  The measurements are labeled 1 (black line), 2 (red line), and 3 (blue line).  Match the measurements to the most appropriate material type