 Joseph von Fraunhofer

Joseph von Fraunhofer (1787–1826) was a German physicist and optical engineer who made significant contributions to the field of optics. He is best known for his work in the development of high-quality optical instruments, particularly telescopes and microscopes. Fraunhofer is especially renowned for his discovery of the Fraunhofer lines—dark lines in the solar spectrum that result from the absorption of specific wavelengths of light by elements in the Sun's atmosphere.