Clas Ohlson company was founded in 1918 by the technically minded Clas Ohlson (1895–1979), as a mail order business based in the Swedish village of Insjön, Dalarna. Initially, only manuals and technical literature were sold, thus allowing people who lived in rural communities to obtain literature that would otherwise be unavailable. He opened his first shop in Insjön in 1926, but it was not until 1989, when the company opened a store in a shopping centre in central Stockholm, that it expanded into the retail business. The first store outside Sweden was opened 1991 in Oslo in Norway and in 1999, the
CLAS detector CLAS detector CEBAF Large Acceptance Spectrometer (CLAS) is a nuclear and particle physics detector located in the experimental Hall B at Jefferson Laboratory in Newport News, Virginia, United States. It is used to study the properties of the nuclear matter by the collaboration of over 200 physicists (CLAS Collaboration) from many countries all around the world. The 0.5 to 12.0 GeV electron beam from the accelerator of Jefferson Laboratory is brought into "Hall B", the experimental hall that houses the CLAS system. Electrons or photons in the incoming beam collide with the nuclei of atoms in the physics "target" located