Search results
Results From The WOW.Com Content Network
The Statue of Liberty, showing advanced patination; verdigris is responsible for the statue's iconic green colour.. Verdigris (/ ˈ v ɜːr d ɪ ɡ r iː (s)/) [1] is a common name for any of a variety of somewhat toxic [2] [3] [4] copper salts of acetic acid, which range in colour from green to a bluish-green depending on their chemical composition.
Scheele's green was invented in 1775 by Carl Wilhelm Scheele. [2] [3] By the end of the 19th century, it had virtually replaced the older green pigments based on copper carbonate. It is a yellowish-green pigment commonly used during the early to mid-19th century in paints as well as being directly incorporated into a variety of products as a ...
Emerald Green, also known as Paris Green, Scheele's Green, Schweinfurt green and Vienna Green, is a synthetic inorganic compound, made by a reaction of sodium arsenite with copper(II) acetate. While it makes a beautiful rich green, the color of the emerald stone, it is highly toxic , due to a main ingredient, arsenic . [ 18 ]
Green death is a solution used to test the resistance of metals and alloys to corrosion. It consists of a mixture of sulfuric acid, hydrochloric acid, iron(III) chloride and copper(II) chloride and its boiling point is at approximately 103 °C. Its typical chemical composition is given in the table hereafter: [1] [2] [3] [4]
Paris green (copper(II) acetate triarsenite or copper(II) acetoarsenite) is an arsenic-based organic pigment. As a green pigment it is also known as Mitis green , Schweinfurt green , Sattler green , emerald , Vienna green , Emperor green or Mountain green .
Floyd Collins was born on the Collins family farm, located approximately 4 miles (6.4 km) east of Mammoth Cave near the Green River in Kentucky. Floyd began entering caves by himself at the age of six in search of Native American artifacts to sell to tourists at the Mammoth Cave Hotel. [5]
Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.
Indian Knoll is an archaeological site near the Green River in Ohio County, Kentucky that was declared to be a U.S. National Historic Landmark. [1]Excavations of Indian Knoll during the Great Depression [2]: 115 were conducted by archaeologists from the University of Kentucky as part of WPA economic recovery efforts. [3]