For enhancing the efficiency of light absorption and light conversion into electrical signals, charge carriers are generated at a titanium - silicon transition and taken up at another gold - silicon transition. (sciencedaily.com)
Light absorption by proteins is the primary event of processes such as vision and photosynthesis that are fundamental to many life forms, including humans as well as plants and bacteria. (uchospitals.edu)
Good understanding of the infrared light absorption became possible only through quantum and relativity theories. (defyccc.com)