Rosin in the context of "Hurdy-gurdy"

Pitch is a viscoelastic polymer which can be natural or manufactured, derived from petroleum, coal tar, or plants. Pitch produced from petroleum may be called bitumen or asphalt, while plant-derived pitch, a resin, is known as rosin in its solid form. Tar is sometimes used interchangeably with pitch, but generally refers to a more liquid substance derived from coal production, including coal tar, or from plants, as in pine tar.

In music, a bow (/boʊ/) is a tensioned stick which has hair (usually horse-tail hair) coated in rosin (to facilitate friction) affixed to it. It is moved across some part (generally some type of strings) of a musical instrument to cause vibration, which the instrument emits as sound. The vast majority of bows are used with string instruments, such as the violin, viola, cello, and bass, although some bows are used with musical saws and other bowed idiophones.

Colophon (/ˈkɒləˌfɒn, -fən/; Ancient Greek: Κολοφών, romanized: Kolophṓn) was an ancient city in Ionia. Founded around the end of the 2nd millennium BC, it was likely one of the oldest of the twelve cities of the Ionian League. It was located between Lebedos (120 stadia to the west) and Ephesus (70 stadia to its south). Its ruins are south of the town Değirmendere in the Menderes district of İzmir Province, Turkey.

The city's name comes from the word κολοφών, "summit", (which is also the origin of the bibliographic term "colophon", in the metaphorical sense of a 'crowning touch',) as it was sited along a ridgeline. The term colophony for rosin comes from the term colophonia resina (Ancient Greek: Κολοφωνία ῥητίνη Kolophōnia rhētinē), resin from the pine trees of Colophon, which was highly valued for increasing friction of the bow hairs of stringed musical instruments.

Larches are deciduous conifers in the genus Larix, of the family Pinaceae. Growing to as much as 60 m (195 ft) tall, they are native to the cooler regions of the Northern Hemisphere. They grow in lowland forests in the far north, and high in mountains further south. Larches are among the dominant plants in the boreal forests of Siberia and Canada, making them the most abundant genus of trees on earth. Larch wood is tough and relatively durable. The wood is used in boatbuilding, cladding, decking, garden furniture, fencing, and construction. Products extracted from larch include arabinogalactan, rosin, turpentine, and an essential oil.

Oleoresins are semi-solid extracts composed of resin and essential or fatty oil. They are obtained by evaporating relevant solvents. The oleoresin of conifers is known as crude turpentine or gum turpentine, which consists of oil of turpentine and rosin.

In metallurgy, a flux is a chemical reducing agent, flowing agent, or purifying agent. Fluxes may have more than one function at a time. They are used in both extractive metallurgy and metal joining. They are named for the ability to make molten metals easier to flow during smelting.

Some of the earliest known fluxes were sodium carbonate, potash, charcoal, coke, borax, lime, lead sulfide and certain minerals containing phosphorus. Iron ore was also used as a flux in the smelting of copper. These agents served various functions, the simplest being a reducing agent, which prevented oxides from forming on the surface of the molten metal, while others absorbed impurities into slag, which could be scraped off molten metal.

Aerial silks (also known as aerial contortion, aerial ribbons, aerial tissues, fabric, ribbon, or tissu) is a type of performance in which one or more artists perform aerial acrobatics while hanging from a specialist fabric. The fabric may be hung as two pieces, or a single piece, folded to make a loop, classified as hammock silks. Performers climb the suspended fabric without the use of safety lines and rely only on their training and skill to ensure safety. They use the fabric to wrap, suspend, drop, swing, and spiral their bodies into and out of various positions. The fabric may also be used to fly through the air, striking poses and figures. Some performers use rosin (dried or mixed with rubbing alcohol) on their hands and feet to increase the friction and grip on the fabric. Aerial silks is a demanding art and requires a high degree of strength, power, flexibility, courage, stamina, and grace to practice.