Fraunhofer also went on to invent the first diffraction spectroscope. By 1814, Fraunhofer had invented the modern spectroscope. The early 19th century saw the invention of the spectroscope by Joseph von Fraunhofer. An emission is formed when an excited gas is viewed directly through a spectroscope. This could be detected with a spectroscope because the emission line spectrum would be shifted. Viewed through the spectroscope in a strong light, it generally shows three characteristic absorption bands. Analysis of this light, with the help of a spectroscope gives us a discontinuous spectrum. Adolph in fact has discovered signs of organic life by studying meteorites through a spectroscope. He often carried a small, handheld spectroscope to study specimens. Brown is academic founder of Zilico Limited which distributes the spectroscope (ZedScan I). On 20 October, Joseph Norman Lockyer in England set up a new, relatively powerful spectroscope. An old name for the mission was EXCEED (Extreme Ultraviolet Spectroscope for Exospheric Dynamics). His "Evolution and the Spectroscope" (1873) appear in Popular Science Monthly.