fresnel pattern
121Menominee Pier Light — Location Menominee, Michigan Coordinates 4 …
122Michigan City East Light — Michigan City Lighthouse Location Michigan City, Indiana Coordinates …
123Marjaniemi Lighthouse — and Pilot Station Location Marjaniemi, Hailuoto, Finland Coordinates …
124North American railroad signals — Main article: North American railway signaling Baltimore and Ohio Railroad Color Position Light bracket masts at Magnolia, West Virginia North American railroad signals generally fall into the category of multi headed electrically lit units… …
125Laser beam profiler — A laser beam profiler captures, displays, and records the spatial intensity profile of a laser beam at a particular plane transverse to the beam propagation path. Since there are many types of lasers ultraviolet, visible, infrared, continuous… …
126Colchester Reef Light — For the lighthouse south of Colchester, Ontario, see Colchester Reef Light (Lake Erie, West). Colchester Reef Light the light at the museum (NPS) Location originally west of Colchester Point in Lake Champlain; now on grounds of Shelburne Museum… …
127Fentes de Young — Simulation des interférences obtenues après les fentes de Young : les deux points en bas de l image sont les sources de lumière. Les fentes de Young (ou interférences de Young) désignent en physique une expérience qui consiste à faire… …
128Detroit River Light — Undated U.S.C.G. photo Location Lake Erie south of Detroit River Year first constructed 1875 (lightship) 1885 (current tower) Automated 1979 Foundation …
