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Air fresheners from Febreze. Air fresheners are products designed to reduce unwanted odors in indoor spaces, or to introduce pleasant fragrances, or both. They typically emit fragrance to mask odors but may use other methods of action such as absorbing, bonding to, or chemically altering compounds in the air that produce smells, killing organisms that produce smells, or disrupting the sense of ...
In October 2007, Reckitt Benckiser won a High Court ruling in a lawsuit with Procter & Gamble over claims that the design of Air Wick Odour Stop was an exact copy of P&G's Febreze air spray. [6] In March 2012, Air Wick announced its partnership with the official charity of the United States' National Park Service, the National Park Foundation.
A portion of a static wick on an aircraft. Note the two sharp metal micropoints and the protective yellow plastic. The first static wicks were developed by a joint Army-Navy team led by Dr. Ross Gunn of the Naval Research Laboratory and fitted onto military aircraft during World War II.
Wick's theorem is a method of reducing high-order derivatives to a combinatorics problem. [1] It is named after Italian physicist Gian Carlo Wick . [ 2 ] It is used extensively in quantum field theory to reduce arbitrary products of creation and annihilation operators to sums of products of pairs of these operators.