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A science fair or engineering fair is an event hosted by a school that offers students the opportunity to experience the practices of science and engineering for themselves. In the United States, the Next Generation Science Standards makes experiencing the practices of science and engineering one of the three pillars of science education.
Laundry is the washing of clothing and other textiles, [1] and, more broadly, their drying and ironing as well. Laundry has been part of history since humans began to wear clothes, so the methods by which different cultures have dealt with this universal human need are of interest to several branches of scholarship.
Laundry tabs were originally introduced in the 1960s in a compacted granular form (similar to an oral medical tablet), when Procter & Gamble launched Salvo tablets, later disappearing from the market in the 1970s. In the 1990s, Unilever and Henkel launched a similar laundry detergent pack product sold in Western Europe under the Persil brand ...
A washing machine (laundry machine, clothes washer, washer, or simply wash) is a machine designed to launder clothing. The term is mostly applied to machines that use water. Other ways of doing laundry include dry cleaning (which uses alternative cleaning fluids and is performed by specialist businesses) and ultrasonic cleaning.
A laundry room or utility room is a room where clothes are washed, and sometimes also dried. In a modern home , laundry rooms are often equipped with an automatic washing machine and clothes dryer , and often a large basin, called a laundry tub , for hand-washing of delicate clothing articles such as sweaters , as well as an ironing board .
Laundry detergent is a type of detergent (cleaning agent) used for cleaning dirty laundry (clothes). Laundry detergent is manufactured in powder ( washing powder ) and liquid form. While powdered and liquid detergents hold roughly equal share of the worldwide laundry detergent market in terms of value , powdered detergents are sold twice as ...
A science fair is a competitive event hosted at schools. Science fair or variations of the term may refer to: Science Fair, a 2018 National Geographic documentary film; Science Fair, a 1999 album by Emm Gryner; Science Fair, a 2008 novel by Dave Barry and Ridley Pearson "Science Fair" (Parker Lewis Can't Lose), a 1990 television episode
Detergents. A detergent is a surfactant or a mixture of surfactants with cleansing properties when in dilute solutions. [1] There are a large variety of detergents. A common family is the alkylbenzene sulfonates, which are soap-like compounds that are more soluble than soap in hard water, because the polar sulfonate is less likely than the polar carboxylate of soap to bind to calcium and other ...