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Sturgeon Bay Canal North Pierhead Light
The Sturgeon Bay Canal North Pierhead Light is a lighthouse located on Sturgeon Bay in Door County, Wisconsin, Door County, Wisconsin. Painted red, the light is situated on the north pier of the southern entrance to the Sturgeon Bay Ship Canal. There are two lighthouses at this location, the other being the Sturgeon Bay Canal Lighthouse. Gallery References General sources * * Further reading * Havighurst, Walter (1943) ''The Long Ships Passing: The Story of the Great Lakes'', Macmillan Publishers. * Oleszewski, Wes, ''Great Lakes Lighthouses, American and Canadian: A Comprehensive Directory/Guide to Great Lakes Lighthouses'', (Gwinn, Michigan: Avery Color Studios, Inc., 1998) . * * Sapulski, Wayne S., (2001) ''Lighthouses of Lake Michigan: Past and Present'' (Paperback) (Fowlerville: Wilderness Adventure Books) ; . * Wright, Larry and Wright, Patricia, ''Great Lakes Lighthouses Encyclopedia'' Hardback (Erin: Boston Mills Press, 2006) . External linksAerial photos of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sturgeon Bay, Wisconsin
Sturgeon Bay is a city in Door County, Wisconsin, United States, and its county seat. The population was 9,646 at the 2020 United States census, 2020 census. Located at the bay of Sturgeon Bay for which it is named, it is the most populous city on the Door Peninsula, a popular Upper Midwest vacation destination. History The area was originally inhabited by the Ho-Chunk and Menominee. The town is known in the Menominee language as ''Namāēw-Wīhkit'', or "bay of the sturgeon". The Menominee ceded this territory to the United States in the 1831 Treaty of Washington, with Menominee (1831), Treaty of Washington. After that, the area was available for white settlement. The community was first recorded as Graham in 1855, but in 1857, the state legislature organized it as the town of Ottumba. Subsequently, the name was reverted to Graham, and in 1860, a petition was submitted to the county board to change the community's name to that of the adjacent bay. A company of volunteer firefigh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wisconsin
Wisconsin ( ) is a U.S. state, state in the Great Lakes region, Great Lakes region of the Upper Midwest of the United States. It borders Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake Michigan to the east, Michigan to the northeast, and Lake Superior to the north. With a population of about 6 million and an area of about 65,500 square miles, Wisconsin is the List of U.S. states and territories by population, 20th-largest state by population and the List of U.S. states and territories by area, 23rd-largest by area. It has List of counties in Wisconsin, 72 counties. Its List of municipalities in Wisconsin by population, most populous city is Milwaukee; its List of capitals in the United States, capital and second-most populous city is Madison, Wisconsin, Madison. Other urban areas include Green Bay, Wisconsin, Green Bay, Kenosha, Wisconsin, Kenosha, Racine, Wisconsin, Racine, Eau Claire, Wisconsin, Eau Claire, and the Fox Cities. Geography of Wiscon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fresnel Lens
A Fresnel lens ( ; ; or ) is a type of composite compact lens (optics), lens which reduces the amount of material required compared to a conventional lens by dividing the lens into a set of concentric annular sections. The simpler Dioptrics, dioptric (purely refraction, refractive) form of the lens was first proposed by Georges-Louis Leclerc, Comte de Buffon, and independently reinvented by the French physicist Augustin-Jean Fresnel (1788–1827) for use in lighthouses. The Catadioptric system, catadioptric (combining refraction and reflection) form of the lens, entirely invented by Fresnel, has outer Prism (optics), prismatic elements that use total internal reflection as well as refraction to capture more oblique light from the light source and add it to the beam, making it visible at greater distances. The design allows the construction of lenses of large aperture and short focal length without the mass and volume of material that would be required by a lens of conventional ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tideland Signal
Tideland Signal, sometimes referred to as Tidelands, was a privately held, Houston, Texas based manufacturer of marine navigational aids, with main offices in Lafayette, Louisiana, Vancouver, British Columbia, Canada, Burgess Hill, UK, Dubai, United Arab Emirates and Singapore. It was the manufacturer of the ML-300 lantern, widely used in lighthouses around the world for more than 50 years. History Tideland Signal was founded by several salesmen of Automatic Power, a battery manufacturer which was then a primary player in the buoy market. The company originally sold directly to Automatic's market, but with limited success. During the 1960s, solar cells had started to become practical systems for recharging batteries in remote locations. Hoffman Electronics, a pioneer in solar power, had approached Automatic with the idea of placing panels on their buoys to reduce the number of battery replacements needed to keep a site operations. Automatic instead saw this as a serious threat t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polymethyl Methacrylate
Poly(methyl methacrylate) (PMMA) is a synthetic polymer derived from methyl methacrylate. It is a transparent thermoplastic, used as an engineering plastic. PMMA is also known as acrylic, acrylic glass, as well as by the trade names and brands Crylux, Walcast, Hesalite, Plexiglas, Acrylite, Lucite, PerClax, and Perspex, among several others ( see below). This plastic is often used in sheet form as a lightweight or shatter-resistant alternative to glass. It can also be used as a casting resin, in inks and coatings, and for many other purposes. It is often technically classified as a type of glass, in that it is a non-crystalline vitreous substance—hence its occasional historic designation as ''acrylic glass''. History The first acrylic acid was created in 1843. Methacrylic acid, derived from acrylic acid, was formulated in 1865. The reaction between methacrylic acid and methanol results in the ester methyl methacrylate. It was developed in 1928 in several different laborat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flashing Light
A light characteristic is all of the properties that make a particular somewhat navigational light identifiable. Graphical and textual descriptions of navigational light sequences and colours are displayed on nautical charts and in Light Lists with the chart symbol for a lighthouse, lightvessel, buoy or sea mark with a light on it. Different lights use different colours, frequencies and light patterns, so mariners can identify which light they are seeing. Abbreviations While light characteristics can be described in prose, e.g. "Flashing white every two seconds", lists of lights and navigation chart annotations use abbreviations. The abbreviation notation is slightly different from one light list to another, with dots added or removed, but it usually follows a pattern similar to the following (see the chart to the right for examples). * An abbreviation of the type of light, e.g. "Fl." for Flashing, "F." for Fixed. * The color of the light, e.g. "W" for White, "G" for Green, "R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lighthouse
A lighthouse is a tower, building, or other type of physical structure designed to emit light from a system of lamps and lens (optics), lenses and to serve as a beacon for navigational aid for maritime pilots at sea or on inland waterways. Lighthouses mark dangerous coastlines, hazardous shoals, reefs, rocks, and safe entries to harbors; they also assist in aerial navigation. Once widely used, the number of operational lighthouses has declined due to the expense of maintenance and the advent of much cheaper, more sophisticated, and more effective electronic navigational systems. History Ancient lighthouses Before the development of clearly defined ports, mariners were guided by fires built on hilltops. Since elevating the fire would improve visibility, placing the fire on a platform became a practice that led to the development of the lighthouse. In antiquity, the lighthouse functioned more as an entrance marker to ports than as a warning signal for reefs and promontory, prom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sturgeon Bay
Sturgeon Bay is an arm of Green Bay extending southeastward approximately 10 miles into the Door Peninsula at the city of Sturgeon Bay, located approximately halfway up the Door Peninsula. The bay is connected to Lake Michigan by the Sturgeon Bay Ship Canal. The Potawatomi name for Sturgeon Bay is "Na-ma-we-qui-tong". Origin The bay seems to represent the pre-glacial path of the Menominee River, with the valley deepened by glacial carving and then submerged into rising lakewaters. Bridges Three bridges cross the bay, including the historic Sturgeon Bay Bridge, and the recently finished Oregon Street Bridge. Fish Sturgeon Bay and Little Sturgeon (just to the south of Sturgeon Bay) are considered biodiversity hotspots because they support a large number of different fish species. Researchers collected viral hemorrhagic septicemia Viral hemorrhagic septicemia (VHS) is a deadly infectious fish disease caused by Viral hemorrhagic septicemia virus. It afflicts over 50 s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Door County, Wisconsin
Door County is the easternmost county in the U.S. state of Wisconsin. As of the 2020 census, its population was 30,066. Its seat of government is Sturgeon Bay. It is named after the strait between the Door Peninsula and Washington Island. This dangerous passage, known as Death's Door, contains shipwrecks and was known to Native Americans and early French explorers. The county was created in 1851 and organized in 1861. Nicknamed the "Cape Cod of the Midwest," Door County is a popular Upper Midwest vacation destination. Tourism is a major contributor to Door County's economy. It is Wisconsin's forty-fourth largest county in population, but it is the eighth largest in terms of economic impact from tourism (over $600 million in 2023). The county is considered a high-recreation retirement destination by the U.S. Department of Agriculture. History Native Americans and French Porte des Morts legend Door County's name came from Porte des Morts ("Death's Door"), the passage ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sturgeon Bay Ship Canal
The Sturgeon Bay Ship Canal is a ship canal connecting Sturgeon Bay with Lake Michigan across the Door Peninsula in Door County, Wisconsin, Door County, Wisconsin. A dredged channel continues through Sturgeon Bay to Green Bay (Lake Michigan), Green Bay. This combined waterway allows ships to sail between Lake Michigan and Green Bay without traversing the dangerous Porte des Morts strait. The canal is approximately long, cutting through the eastern side of the peninsula in a northwest-to-southeast orientation. There are no lock (water navigation), locks. History The Sturgeon Bay Ship Canal was dug by a private group headed by then-president of Chicago and North Western Railway, William B. Ogden, between July 8, 1872 and the late fall of 1881. Although smaller craft began using the canal in 1880, it was not open for large-scale watercraft until 1890. Timber along the canal route was burned to get rid of it instead of being used for wood. The cost of completing the cut in 1881 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sturgeon Bay Canal Lighthouse
The Sturgeon Bay Canal lighthouse is a lighthouse located at the Coast Guard station near Sturgeon Bay in Door County, Wisconsin. Situated on the east side of the south entrance to the Sturgeon Bay Ship Canal, it was listed in the National Register of Historic Places in 1984, as the Sturgeon Bay Canal Lighthouse. The lighthouse originally was constructed in 1899; instability forced the addition of steel bracing in 1903. It is similar to the reinforced Devils Island Lighthouse. There are two lighthouses at this location, the other being the Sturgeon Bay Canal North Pierhead Light. Gallery Notes References * * Further reading * Havighurst, Walter (1943) ''The Long Ships Passing: The Story of the Great Lakes'', Macmillan Publishers Macmillan Publishers (occasionally known as the Macmillan Group; formally Macmillan Publishers Ltd in the United Kingdom and Macmillan Publishing Group, LLC in the United States) is a British publishing company traditionally considered to b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macmillan Publishers
Macmillan Publishers (occasionally known as the Macmillan Group; formally Macmillan Publishers Ltd in the United Kingdom and Macmillan Publishing Group, LLC in the United States) is a British publishing company traditionally considered to be one of the Big Five (publishers), "Big Five" English language publishers (along with Penguin Random House, Hachette Book Group USA, Hachette, HarperCollins and Simon & Schuster). Founded in London in 1843 by Scottish brothers Daniel MacMillan, Daniel and Alexander MacMillan (publisher), Alexander MacMillan, the firm soon established itself as a leading publisher in Britain. It published two of the best-known works of Victorian-era children's literature, Lewis Carroll's ''Alice's Adventures in Wonderland'' (1865) and Rudyard Kipling's ''The Jungle Book'' (1894). Former Prime Minister of the United Kingdom, Harold Macmillan, grandson of co-founder Daniel, was chairman of the company from 1964 until his death in December 1986. Since 1999, Macmi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
