Ivory

Ivory is a hard, white material from the tusks (traditionally elephant's) and teeth of animals, that can be used in art or manufacturing. It consists mainly of dentine (inorganic formula Ca₁₀(PO₄)₆(CO₃).H₂O)), one of the physical structures of teeth and tusks. The chemical structure of the teeth and tusks of mammals is the same, regardless of the species of origin. The trade in certain teeth and tusks other than elephant is well established and widespread; therefore, "ivory" can correctly be used to describe any mammalian teeth or tusks of commercial interest which are large enough to be carved or scrimshawed. It has been valued since ancient times for making a range of items, from ivory carvings to false teeth, fans, and dominoes.Elephant ivory is the most important source, but ivory from mammoth, walrus, hippopotamus, sperm whale, killer whale, narwhal and wart hog are used as well. Elk also have two ivory teeth, which are believed to be the remnants of tusks from their ancestors.

Ivory (disambiguation)

Ivory is a substance found in the teeth and tusks of animals such as elephants.

Ivory may also refer to:

People

Other uses

Ivory (soap)

"Ivory" is a personal care brand created by the Procter & Gamble Company (P&G), including varieties of a white and mildly scented bar soap, that became famous for its claim of purity and for floating in water. Over the years, the brand has been extended to other varieties and products.

History

As Ivory is one of P&G's older products (first sold in 1879), P&G is sometimes called "Ivory Towers" and its factory and research center in St. Bernard, Ohio, is named "Ivorydale".

In 1840 the J.B. Williams Company in Glastonbury, Connecticut manufactured soap under the name Ivorine. Williams decided to focus on its shaving soap and sold Ivorine to Procter & Gamble, who later renamed it Ivory.

Ivory bar soap is whipped with air in its production and floats in water. According to an apocryphal story, later discounted by the company, a worker accidentally left the mixing machine on too long and the company chose to sell the "ruined" batch, because the added air did not change the basic ingredients of the soap. When appreciative letters about the new, floating soap inundated the company, P&G ordered the extended mix time as a standard procedure. However, company records indicate that the design of Ivory did not come about by accident. In 2004, over 100 years later, the P&G company archivist Ed Rider found documentation that revealed that chemist James N. Gamble, son of the founder, had discovered how to make the soap float and noted the result in his writings.

Movement

Movement may refer to:

Society and the arts

Music

Philosophical movement

A philosophical movement is either the appearance or increased popularity of a specific school of philosophy, or a fairly broad but identifiable sea-change in philosophical thought on a particular subject. Major philosophical movements are often characterized with reference to the nation, language, or historical era in which they arose.

Talk of a philosophical movement can often function as a shorthand for talk of the views of a great number of different philosophers (and others associated with philosophy, such as historians, artists, scientists and political figures). On the other hand, most philosophical movements in history consisted in a great number of individual thinkers who disagreed in various ways; it is often inaccurate and something of a caricature to treat any movement as consisting in followers of uniform opinion. More often the defining ideas of any philosophical movement are templates on which individual thinkers develop their own particular ideas.

Movement (clockwork)

In horology, a movement, also known as a caliber, is the mechanism of a clock or watch, as opposed to the case, which encloses and protects the movement, and the face which displays the time. The term originated with mechanical timepieces, whose clockwork movements are made of many moving parts. It is less frequently applied to modern electronic or quartz timepieces, where the word module is often used instead.

In modern mass-produced clocks and watches, the same movement is often inserted into many different styles of case. When buying a quality pocketwatch from the mid-19th to the mid-20th century, for example, the customer would select movement and case individually. Mechanical movements get dirty and the lubricants dry up, so they must periodically be disassembled, cleaned, and lubricated. One source recommends servicing intervals of: 3–5 years for watches, 15–20 years for grandfather clocks, 10–15 years for wall or mantel clocks, 15–20 years for anniversary clocks, and 7 years for cuckoo clocks, with the longer intervals applying to antique timepieces.