work together to gather and interpret sound waves. Most absorbance measurements require the same basic set up: a light source, a means to select a narrow range of wavelengths of light, a sample cell and a detector that can measure the power of radiation passing through samples and reference solutions. energy passing thru a target material describes what. who discovered light? The relative intensity of the fluorescence is measured at the various wavelengths to plot the emission spectrum, as illustrated in Figure 1(b). Contains the Cochlea, 1. includes three tiny bones called the hammer, the anvil, and the stirrup, 1. the part of the ear you can see In the