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Chalk is a soft, white, porous, sedimentary carbonate rock. It is a form of limestone composed of the mineral calcite and originally formed deep under the sea by the ...
From the late 18th century to the end of the 19th century, bread sold in England and the United States was often adulterated with hazardous materials, including chalk, sawdust, alum, plaster, clay and ammonium carbonate. Frederick Accum was the first to raise alarm to the food adulteration in 1820.
The name Crayola was suggested by Alice Binney, wife of company founder Edwin Binney, combining craie, French for "chalk," a reference to the pastels that preceded and lent their name to the first drawing crayons, with the suffix -ola, meaning "oleaginous," a reference to the wax from which the crayons were made. [1]
A colorful selection of crayons. A crayon (or wax pastel) is a stick of pigmented wax used for writing or drawing. Wax crayons differ from pastels, in which the pigment is mixed with a dry binder such as gum arabic, and from oil pastels, where the binder is a mixture of wax and oil.
Then Edwin Binney, working with his wife, Alice Stead Binney, developed his own famous product line of wax crayons beginning on June 10, 1903, [10] which it sold under the brand name Crayola. The Crayola name was coined by Alice Binney who was a former schoolteacher. It comes from craie (French for "chalk") and ola for "oleaginous" or "oily."
Prussian blue is changed to Midnight Blue because of Prussia by then being an extinct country for decades. 1959: The first Crayola TV ads appear during the children's TV show Ding Dong School. In the 64-count box of crayons, two colors are discontinued and replaced by others: "Brilliant Rose" by "Magenta," and "Light Blue" by "Turquoise Blue."
The Japanese Chalk Association reportedly banned imports of Hagoromo Fulltouch from South Korea for five years, with the concern that it would destabilize the market. [20] In 2017, the company began importing the brand to Vietnam. The product is also sold in Europe and America, particularly through the e-commerce website Amazon. [20]
The Chalk Group (often just called the Chalk) is the lithostratigraphic unit (a certain number of rock strata) which contains the Upper Cretaceous limestone succession in southern and eastern England.