1 Glossary: Absorption Spectrum: results from the ability of pigments to absorb incident electromagnetic radiation. Like the action spectrum, the parameter of interest (light absorbed) is plotted as a function of the wavelength of the radiation.arious chlorophylls and accessory pigments have characteristic absorption spectra. The action spectrum of photosynthesis relates to the relative electron-exciting effectiveness of different wavelengths of light.
Joseph Guillotine had never invented the device. He only proposed to find a mechanical and more human mean to carry death penalty to the National Assembly in 1789. The machine was invented by a surgeon-Antoine Louis-in 1792.
subjects of study. Howard T. Ricketts, (born Feb. 9, 1871, Findlay, Ohio, U.S.âdied May 3, 1910, Mexico City, Mex.), American pathologist who discovered the causative organisms and mode of transmission of Rocky Mountain spotted fever and epidemic typhus (known in Mexico, where Ricketts worked for a time and died of typhus, as tabardillo).