institute and, at the age of , became the director of glass manufacturing. he was responsible for the development of new methods of glass production and processing. the opticalinstruments he himself developed, including the spectrometer and the diffraction grid, allowed fraunhofer to conduct fundamental...
illustrations videos audio only vector/raw reset apply filter search results sort by most relevant best selling latest uploads content type all photos illustrations videos audio within results license image orientation color composition people number of people gender age group ethnicity more filters...
sign in | join free sign out inquiry basket () february, th, products products supplier picture search popular keywords: rebar testing machine safety product underground water detection meter construction equipment machine radar detector more electrical instruments weight machine water power system surveillance...