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A bathtub faucet with built-up calcification from hard water in Southern Arizona.. Hard water is water that has a high mineral content (in contrast with "soft water"). Hard water is formed when water percolates through deposits of limestone, chalk or gypsum, [1] which are largely made up of calcium and magnesium carbonates, bicarbonates and sulfates.
Water softening is the removal of calcium, magnesium, and certain other metal cations in hard water. The resulting soft water requires less soap for the same cleaning effort, as soap is not wasted bonding with calcium ions. Soft water also extends the lifetime of plumbing by reducing or eliminating scale build-up in pipes and fittings.
Hocking Hills State Park is a state park in the Hocking Hills region of Hocking County, Ohio, United States. In some areas the park adjoins the Hocking State Forest. Within the park are over 25 miles (40 km) of hiking trails, rock formations, waterfalls, and recess caves. The trails are open from dawn to dusk, all year round, including holidays.
Soap scum. Soap scum or lime soap is the white solid composed of calcium stearate, magnesium stearate, and similar alkaline earth metal derivatives of fatty acids. These materials result from the addition of soap and other anionic surfactants to hard water. Hard water contains calcium and magnesium ions, which react with the surfactant anion to ...
The Franklin Park Cascades is a water feature of ponds and waterfalls, constructed in 1991 for Ameriflora '92. The system was renovated in the mid-2010s for about $500,000, though a $2.2 million project in 2019 fully fixed the cascades and made the surrounding area resemble a more natural forest setting.
Hoover Dam (Ohio) Hoover Dam, in Blendon Township, near Westerville, Ohio, dams the Big Walnut Creek to form the Hoover Memorial Reservoir. This reservoir is a major water source for the city of Columbus, Ohio. It holds 20.8 billion US gallons (79,000,000 m 3) of water and has a surface area of 3,272 acres (13.24 km 2), or about five square miles.
Topiary Park is a 9.2-acre (3.7 ha) public park and garden in Columbus, Ohio's Discovery District.The park's topiary garden, officially the Topiary Garden at Old Deaf School Park, is designed to depict figures from Georges Seurat's 1884 painting, A Sunday Afternoon on the Island of La Grande Jatte.
University Hall was the first building on campus, built in 1873 and reconstructed in 1976. The proposal of a manufacturing and agriculture university in central Ohio was initially met in the 1870s with hostility from the state's agricultural interests and competition for resources from Ohio University, which was chartered by the Northwest Ordinance and Miami University. [8]