Pitch (resin)

pitchpitch resinpitchedtarredblack pitchpetroleum pitchpine pitchpitch blackpitch distillerypitch factories
Pitch is a viscoelastic polymer which can be natural or manufactured, derived from petroleum, coal tar, or plants.wikipedia
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Asphalt

bitumenbituminoustarmac
Various forms of pitch may also be called tar, bitumen, or asphalt.
It may be found in natural deposits or may be a refined product, and is classed as a pitch.

Tar

wood tartar kilnTars
Various forms of pitch may also be called tar, bitumen, or asphalt. The heating (dry distilling) of wood causes tar and pitch to drip away from the wood and leave behind charcoal.
"Tar" and "pitch" can be used interchangeably; asphalt (naturally occurring pitch) may also be called either "mineral tar" or "mineral pitch".

Rosin

colophonycolophoniumwood rosin
Some products made from plant resin are also known as rosin.
A mixture of pitch and rosin is used to make a surface against which glass is polished when making optical components such as lenses.

Coal tar

tarcoal tar pitchcoal-tar
Pitch is a viscoelastic polymer which can be natural or manufactured, derived from petroleum, coal tar, or plants.
In the coal gas era, there were many companies in Britain whose business was to distill coal tar to separate the higher-value fractions, such as naphtha, creosote and pitch.

Waterproofing

waterproofwatertightwater-resistant
Pitch may also be used to waterproof wooden containers and in the making of torches.
The hulls of boats and ships were once waterproofed by applying tar or pitch.

Shipbuilding

shipbuildershipwrightship building
Pitch was traditionally used to help caulk the seams of wooden sailing vessels (see shipbuilding).
Early Egyptians also knew how to assemble planks of wood with treenails to fasten them together, using pitch for caulking the seams.

Pitch drop experiment

John MainstonepitchPitch Drop
The pitch drop experiment taking place at University of Queensland is a long-term experiment which demonstrates the flow of a piece of pitch over many years.
The pitch drop experiment is a long-term experiment which measures the flow of a piece of pitch over many years.

Viscosity

viscouskinematic viscositydynamic viscosity
It was calculated in the 1980s that the pitch in the experiment has a viscosity approximately 230 billion (2.3×10 11 ) times that of water.
A fluid with a high viscosity, such as pitch, may appear to be a solid.

Caulk

caulkingcaulkedcaulker
Pitch was traditionally used to help caulk the seams of wooden sailing vessels (see shipbuilding).
The caulking is then covered over with a putty, in the case of hull seams, or else in deck seams with melted pine pitch, in a process referred to as paying, or "calefaction".

Birch tar

birch-tarbirch bark tarbirch pitch
Birchbark is used to make birch-tar, a particularly fine tar.
Birch tar or birch pitch is a substance (liquid when heated) derived from the dry distillation of the bark of the birch tree.

Resin

resinsresinouspine resin
Pitch produced from plants is also known as resin.

Cutler's resin

It is used to make Cutler's resin.
Cutler's resin is a synthetic resin made of pine pitch, beeswax, and sawdust or carnauba wax used for centuries (to today) to attach knife handles.

Dry distillation

dry distillingdry distilleddry-distilling
The heating (dry distilling) of wood causes tar and pitch to drip away from the wood and leave behind charcoal.
The distillation of pine wood causes Pine tar and pitch to drip away from the wood and leave behind charcoal.

Pine tar

tarStockholm tarpine pitch
Tar and pitch for maritime use was in such demand that it became an important export for the American colonies, which had extensive pine forests.

Viscoelasticity

viscoelasticvisco-elasticVisco-elasticity
Pitch is a viscoelastic polymer which can be natural or manufactured, derived from petroleum, coal tar, or plants.

Polymer

polymershomopolymerpolymeric
Pitch is a viscoelastic polymer which can be natural or manufactured, derived from petroleum, coal tar, or plants.

Petroleum

crude oiloilcrude
Pitch is a viscoelastic polymer which can be natural or manufactured, derived from petroleum, coal tar, or plants.

Torch

torchesburning torchflambeau
Pitch may also be used to waterproof wooden containers and in the making of torches.

University of Queensland

Queensland UniversityQueenslandThe University of Queensland
The pitch drop experiment taking place at University of Queensland is a long-term experiment which demonstrates the flow of a piece of pitch over many years.

Long-term experiment

long-term studylongest-running experiments
The pitch drop experiment taking place at University of Queensland is a long-term experiment which demonstrates the flow of a piece of pitch over many years.

1,000,000,000

billionbnmilliard
It was calculated in the 1980s that the pitch in the experiment has a viscosity approximately 230 billion (2.3×10 11 ) times that of water.

Ernest Walton

Ernest Thomas Sinton WaltonWaltonErnest T. S. Walton
Another experiment was begun by a colleague of Nobel Prize winner Ernest Walton in the physics department of Trinity College in Ireland in 1944.

Trinity College Dublin

Trinity College, DublinTrinity CollegeTCD
Another experiment was begun by a colleague of Nobel Prize winner Ernest Walton in the physics department of Trinity College in Ireland in 1944.

Ireland

IrishIRLisland of Ireland
Another experiment was begun by a colleague of Nobel Prize winner Ernest Walton in the physics department of Trinity College in Ireland in 1944.