Kettle
A kettle, sometimes called a tea kettle or teakettle, is a type of pot, typically metal, specialized for boiling water, with a lid, spout and handle, or a small kitchen appliance of similar shape that functions in a self-contained manner. Kettles can be heated either by placing on a stove, or by their own internal electric heating element in the appliance versions.
History
The first kettles were used in ancient Mesopotamia for purposes other than cooking. Over time these artistically decorated earthenware containers became more frequently utilized in the kitchen. In China, kettles were typically made of iron and were placed directly over an open flame. Travellers used the kettles to boil fresh water to make it suitable for drinking.
The word kettle originates from Old Norse ketill "cauldron". The Old English spelling was cetel with initial che- [t?] like 'cherry', Middle English (and dialectal) was chetel, both come (together with German Kessel "cauldron") ultimately from Germanic *katilaz, that was borrowed from Latin catillus, diminutive form of catinus "deep vessel for serving or cooking food", which in various contexts is translated as "bowl", "deep dish", or "funnel".
Kettle (birds)
A kettle is a term that birders use to describe a group of birds wheeling and circling in the air. The kettle may be composed of several different species at the same time. Nature photographer M. Timothy O'Keefe theorizes that the word derives from the appearance of birds circling tightly in a thermal updraft "like something boiling in a cauldron." Ornithologist Donald Heintzelman has done more than anyone to popularize the term kettle, using the term at least as early as 1970 in his book Hawks of New Jersey to describe raptor flight, followed by uses in print over four decades. The related terms "caldron" and "boil" are also heard to describe the same sorts of raptor behavior. Osprey-watcher David Gessner, however, claims a Pennsylvania lowland called the Kettle ("der Kessel" in Pennsylvania Dutch), near Hawk Mountain, is the source of the term.
In some species—e.g., the terns of Nantucket—kettling behavior is evidently a way of "staging" a flock in readiness for migration. Pre-migrational turkey vultures kettle by the hundreds in the thermals that rise over Vancouver Island before they venture across the Strait of Juan de Fuca toward Washington State. At Hawk Mountain, broad-winged hawks form kettles in September before flying south. Kettling apparently serves as a form of avian communication—an announcement of imminent departure—as well as a way of gaining altitude and conserving strength.
Kettle (disambiguation)
A kettle is a vessel for heating water. Kettle may also refer to:
Places
Fiction
Other uses
Vinyl
In chemistry, vinyl or ethenyl is the functional group −CH=CH2, namely the ethylene molecule (H2C=CH2) minus one hydrogen atom. The name is also used for any compound containing that group, namely R−CH=CH2 where R is any other group of atoms.
An industrially important example is vinyl chloride, precursor to PVC, a plastic commonly known as vinyl.
Vinyl is one of the alkenyl functional groups. On a carbon skeleton, sp2-hybridized carbons or positions are often called vinylic. Allyls, acrylates and styrenics contain vinyl groups. (A styrenic crosslinker with two vinyl groups is called divinyl benzene.)
Etymology
The etymology of vinyl is the Latin vinum = "wine", because of its relationship with alcohol (in its original sense of ethyl alcohol). The term "vinyl" was coined by the German chemist Hermann Kolbe in 1851.
Vinyl polymers
Vinyl groups can polymerize with the aid of a radical initiator or a catalyst, forming vinyl polymers. In these polymers, the double bonds of the vinyl monomers turn into single bonds and the different monomers are joined by single bonds. Vinyl groups do not exist in vinyl polymer; the term refers to the precursor. It is sometimes important to ascertain the absence of unreacted vinyl monomer in the final product when the monomer is toxic or reduces the performance of the plastic. The following table gives some examples of vinyl polymers.
Vinyl (2000 film)
Vinyl is a 2000 documentary film by Toronto filmmaker/record collector Alan Zweig. In the film, Zweig seeks not to talk to people who collect vinyl records to discuss music, but rather to discuss what drives someone to collect records in the first place. Zweig spends a large portion of the film in stylized self-filmed "confessions", where he expounds on his life in regard to record collecting, feeling it has prevented him from fulfilling his dreams of a family.
In addition to celebrities like Canadian director/actor Don McKellar and American Splendor creator Harvey Pekar, Zweig speaks to a variety of record collectors. Collectors include a car wash employee who claims to own over one million records and claims to have memorized the track listing of every K-Tel collection he owns, a government employee who refuses to organize his collection because he doesn't want people to come over and a man who threw out his large record collection rather than sell or give it away because he didn't want anyone else to own it.
Vinyl (EP)
Vinyl is an EP by alternative rock group Dramarama. It was released in 1992.
Track listing
References
Podcasts:
