focal property
61Telecentric lens — A telecentric lens is a compound lens which has its entrance or exit pupil at infinity; in the prior case, this produces an orthographic view of the subject. This means that the chief rays (oblique rays which pass through the center of the… …
62Devils Island Light — Location Devils Island, Wisconsin Coordinates 47°04′48″N 90°43′42″W …
63Cheboygan Crib Light — The light in 2001 Location Cheboygan, Michigan Coordinates …
64Chicago Harbor Light — Location Chicago, Illinois Coordinates 41°53 …
65Milwaukee Pierhead Light — Location Milwaukee, Wisconsin Coordinates …
66Round Island Light (Michigan) — Round Island Light Location Mackinac County, Michigan Coordinates …
67Manistee Pierhead lights — Manistee Breakwater Lighthouse Location Manistee, Michigan Coordinates …
68McGulpin Point Light — Location Straits of Mackinac, Michigan Coordinates …
69reaction — 1. The response of a muscle or other living tissue or organism to a stimulus. 2. The color change effected in litmus and certain other organic pigments by contact with substances such as acids or alkalies; also the property that such substances… …
70Chandeleur Island Light — 1971 Location Chandeleur Islands, Gulf of Mexico, Louisiana Year first constructed 1848 Year first lit 1896 (most recent tower) Automated 1951? Deactivat …
