Diagram of a monocular using a Schmidt-Pechan prism. A monocular is a modified refracting telescope used to magnify the images of distant objects by passing light through a series of lenses and usually prisms, the application of prisms resulting in a lightweight, compact telescope.
Area code 609 serves telephones in southeastern and central New Jersey, including the cities of Trenton, Long Beach Island, Princeton, Hamilton and Atlantic City. In terms of geographic coverage, it is the largest in the state of New Jersey.In the original North American Number Plan (NANP), all of New Jersey was served by area code 201, until it was split in 1958 to create area 609.n terms of geographic coverage, it is the largest in the state of New Jersey. In the original North American Number Plan (NANP), all of New Jersey was served by area code 201, until it was split in 1958 to create area 609.
Area code 509, Spokane [edit]. Area code 509 is a state of Washington telephone area code which covers central and eastern Washington, including Spokane, the Tri-Cities, Yakima, Walla Walla, and Wenatchee. It was created in a split from area code 206 in a flash-cut on January 1, 1957.