171 relations: Acrylate polymer, Acrylic acid, Acrylic paint, Alicia (submarine), Ampeg, Angle of incidence (optics), Anti-scratch coating, Aquarium, Archaea, Architectural light shelf, Arthroplasty, Artificial nails, Astrodome, B.C. Rich, Bass guitar, Bathyscaphe Trieste, Biochip, Biocompatibility, Bioprocess, Bisphenol A, Blacklight, Bodybuilding, Boeing B-17 Flying Fortress, Bone cement, Bulk polymerization, Canopy (building), Carbon, Carbon dioxide, Carbon monoxide, Carcinogen, Cardiopulmonary resuscitation, Cataract, Cell casting, Chloroform, Chromatography, Combustion, Compact disc, Compression molding, Contact lens, Cross-link, Cyanoacrylate, Cyanobacteria, Dan Armstrong, Daylighting, Deal toy, Density, Depolymerization, Designer drug, Diasec, Dichloromethane, ..., Dispersant, Dosimeter, DVD, Electron microscope, Electron-beam lithography, Emulsion polymerization, Ester, Extrusion, F. J. Duarte, Flexural strength, Formaldehyde, Furniture, Futuro, Gamma ray, Glass, Glass transition, Glasses, Grout, Harold Ridley (ophthalmologist), Hawker Hurricane, High-heeled shoe, Human eye, Hydrogen, Hydrolysis, Hydrophile, Hydrophobe, Hydroxy group, Hypotension, Ibanez, Ice hockey, Impact (mechanics), Imperial Chemical Industries, Infrared, Injection moulding, Ink, Intraocular lens, Jan Kubíček, John Bonham, Ken Yeang, Lab-on-a-chip, Laser cutting, Laser dye, LaserDisc, Led Zeppelin, Leroy Lamis, Light, List of synthetic polymers, Living polymerization, Ludwig Drums, Lung, Luthier, MDMA, Medical research, Methacrylic acid, Methanol, Methyl ethyl ketone peroxide, Methyl methacrylate, Micro-encapsulation, Microfluidics, Molecular mass, Nanometre, Olympiapark (Munich), Organic laser, Organic photonics, Orthopedic surgery, Otto Röhm, Oxygen, Petroleum, Photolithography, Picture frame, Picture framing glass, Plastic optical fiber, Plastic surgery, Plastic welding, Pleural cavity, Plombage, Polyacrylonitrile, Polycarbonate, Radical polymerization, Refractive index, Remote control, Resist (semiconductor fabrication), Riot control, Rohm and Haas, Rubber toughening, Salvador Dalí, Semiconductor, Silicon, Silicon dioxide, Soda–lime glass, Solar cell, Solid-state dye lasers, Solution polymerization, Solvent, Spectrophotometry, Spin coating, Summerland disaster, Supermarine Spitfire, Suspension (chemistry), Synthetic resin, Tacticity, Tattoo, Thermal expansion, Thermoplastic, Thin-film-transistor liquid-crystal display, Tissue (biology), Tombstone (financial industry), Toughness, Trademark, Transmittance, Transparency and translucency, Tuberculosis, Ultimate tensile strength, Ultraviolet, Viscosity, Visible spectrum, Water, Wavelength, Window, X-ray, 1972 Summer Olympics. Expand index (121 more) » « Shrink index
Acrylate polymers belong to a group of polymers which could be referred to generally as plastics.
Acrylic acid (IUPAC: propenoic acid) is an organic compound with the formula CH2.
Acrylic paint is a fast-drying paint made of pigment suspended in acrylic polymer emulsion.
Alicia (Marlin Submarines AP6) is a 6-seater submarine designed and built by Marlin Submarines of Plymouth, England.
Ampeg is a manufacturer of musical instruments, especially the musical instrument amplifier, established by Everett Hull and Stanley Michaels in 1946.
In geometric optics, the angle of incidence is the angle between a ray incident on a surface and the line perpendicular to the surface at the point of incidence, called the normal.
An anti-scratch or scratch-resistant coating is a film or coating that can be applied to optical surfaces, such as the faces of a lens or photographic film.
An aquarium (plural: aquariums or aquaria) is a vivarium of any size having at least one transparent side in which aquatic plants or animals are kept and displayed.
Archaea (or or) constitute a domain of single-celled microorganisms.
A light shelf is a horizontal surface that reflects daylight deep into a building.
Arthroplasty (literally "forming of joint") is an orthopedic surgical procedure where the articular surface of a musculoskeletal joint is replaced, remodeled, or realigned by osteotomy or some other procedure.
Artificial nails, also known as fake nails, false nails, fashion nails, nail enhancements, nail wraps, or nail extensions, are extensions placed over fingernails as fashion accessories.
The NRG Astrodome, also known as the Houston Astrodome or simply the Astrodome, is the world's first multi-purpose, domed sports stadium, located in Houston, Texas.
B.C. Rich is an American brand of acoustic and electric guitars and bass guitars founded by Bernardo Chavez Rico in 1969.
The bass guitar (also known as electric bass, or bass) is a stringed instrument similar in appearance and construction to an electric guitar, except with a longer neck and scale length, and four to six strings or courses.
Trieste is a Swiss-designed, Italian-built deep-diving research bathyscaphe, which with its crew of two reached a record maximum depth of about, in the deepest known part of the Earth's oceans, the Challenger Deep, in the Mariana Trench near Guam in the Pacific.
In molecular biology, biochips are essentially miniaturized laboratories that can perform hundreds or thousands of simultaneous biochemical reactions.
Biocompatibility is related to the behavior of biomaterials in various contexts.
A bioprocess is a specific process that uses complete living cells or their components (e.g., bacteria, enzymes, chloroplasts) to obtain desired products.
Bisphenol A (BPA) is an organic synthetic compound with the chemical formula (CH3)2C(C6H4OH)2 belonging to the group of diphenylmethane derivatives and bisphenols, with two hydroxyphenyl groups.
A blacklight (or often black light), also referred to as a UV-A light, Wood's lamp, or simply ultraviolet light, is a lamp that emits long-wave (UV-A) ultraviolet light and not much visible light.
Bodybuilding is the use of progressive resistance exercise to control and develop one's musculature.
The Boeing B-17 Flying Fortress is a four-engine heavy bomber developed in the 1930s for the United States Army Air Corps (USAAC).
Bone cements have been used very successfully to anchor artificial joints (hip joints, knee joints, shoulder and elbow joints) for more than half a century.
Bulk polymerization or mass polymerization is carried out by adding a soluble radical initiator to pure monomer in liquid state.
A canopy is an overhead roof or else a structure over which a fabric or metal covering is attached, able to provide shade or shelter from weather conditions such as sun, hail, snow and rain.
Carbon (from carbo "coal") is a chemical element with symbol C and atomic number 6.
Carbon dioxide (chemical formula) is a colorless gas with a density about 60% higher than that of dry air.
Carbon monoxide (CO) is a colorless, odorless, and tasteless gas that is slightly less dense than air.
A carcinogen is any substance, radionuclide, or radiation that promotes carcinogenesis, the formation of cancer.
Cardiopulmonary resuscitation (CPR) is an emergency procedure that combines chest compressions often with artificial ventilation in an effort to manually preserve intact brain function until further measures are taken to restore spontaneous blood circulation and breathing in a person who is in cardiac arrest.
A cataract is a clouding of the lens in the eye which leads to a decrease in vision.
Cell casting is a method used for creating poly(methyl methacrylate) (PMMA) sheets.
Chloroform, or trichloromethane, is an organic compound with formula CHCl3.
Chromatography is a laboratory technique for the separation of a mixture.
Combustion, or burning, is a high-temperature exothermic redox chemical reaction between a fuel (the reductant) and an oxidant, usually atmospheric oxygen, that produces oxidized, often gaseous products, in a mixture termed as smoke.
Compact disc (CD) is a digital optical disc data storage format that was co-developed by Philips and Sony and released in 1982.
Compression Molding is a method of molding in which the moulding material, generally preheated, is first placed in an open, heated mould cavity.
A contact lens, or simply contact, is a thin lens placed directly on the surface of the eye.
A cross-link is a bond that links one polymer chain to another.
Cyanoacrylates are a family of strong fast-acting adhesives with industrial, medical, and household uses.
Cyanobacteria, also known as Cyanophyta, are a phylum of bacteria that obtain their energy through photosynthesis, and are the only photosynthetic prokaryotes able to produce oxygen.
Dan Armstrong (October 7, 1934 June 8, 2004) was an American guitarist, luthier, and session musician.
Daylighting is the practice of placing windows, other openings, and reflective surfaces so that sunlight (direct or indirect) can provide effective internal lighting.
A deal toy (also deal gift, lucite tombstone or financial tombstone) is a customized memento or gift that is intended to mark and commemorate the closing of a business deal in finance or investment banking.
The density, or more precisely, the volumetric mass density, of a substance is its mass per unit volume.
Depolymerization (or depolymerisation) is the process of converting a polymer into a monomer or a mixture of monomers.
A designer drug is a structural or functional analog of a controlled substance that has been designed to mimic the pharmacological effects of the original drug, while avoiding classification as illegal and/or detection in standard drug tests.
Diasec is the registered trademark for the original method of face-mounting prints, such as photographs on acrylic sheet.
Methylene dichloride (DCM, or methylene chloride, or dichloromethane) is a geminal organic compound with the formula CH2Cl2.
A dispersant or a dispersing agent or a plasticizer or a superplasticizer is either a non-surface active polymer or a surface-active substance added to a suspension, usually a colloid, to improve the separation of particles and to prevent settling or clumping.
A radiation dosimeter is a device that measures exposure to ionizing radiation.
DVD (an abbreviation of "digital video disc" or "digital versatile disc") is a digital optical disc storage format invented and developed by Philips and Sony in 1995.
An electron microscope is a microscope that uses a beam of accelerated electrons as a source of illumination.
Electron-beam lithography (often abbreviated as e-beam lithography) is the practice of scanning a focused beam of electrons to draw custom shapes on a surface covered with an electron-sensitive film called a resist (exposing).
Emulsion polymerization is a type of radical polymerization that usually starts with an emulsion incorporating water, monomer, and surfactant.
In chemistry, an ester is a chemical compound derived from an acid (organic or inorganic) in which at least one –OH (hydroxyl) group is replaced by an –O–alkyl (alkoxy) group.
Extrusion is a process used to create objects of a fixed cross-sectional profile.
Francisco Javier "Frank" Duarte (born c. 1954) is a laser physicist and author/editor of several well-known books on tunable lasers and quantum optics.
Flexural strength, also known as modulus of rupture, or bend strength, or transverse rupture strength is a material property, defined as the stress in a material just before it yields in a flexure test.
Furniture refers to movable objects intended to support various human activities such as seating (e.g., chairs, stools, and sofas), eating (tables), and sleeping (e.g., beds).
A Futuro house in Warrington, New Zealand. Futuro, or Futuro House, is a round, prefabricated house designed by Matti Suuronen, of which fewer than 100 were built during the late 1960s and early 1970s.
A gamma ray or gamma radiation (symbol γ or \gamma), is penetrating electromagnetic radiation arising from the radioactive decay of atomic nuclei.
Glass is a non-crystalline amorphous solid that is often transparent and has widespread practical, technological, and decorative usage in, for example, window panes, tableware, and optoelectronics.
The glass–liquid transition, or glass transition, is the gradual and reversible transition in amorphous materials (or in amorphous regions within semicrystalline materials), from a hard and relatively brittle "glassy" state into a viscous or rubbery state as the temperature is increased.
Glasses, also known as eyeglasses or spectacles, are devices consisting of glass or hard plastic lenses mounted in a frame that holds them in front of a person's eyes, typically using a bridge over the nose and arms which rest over the ears.
Grout is a fluid form of concrete used to fill gaps.
Sir Nicholas Harold Lloyd Ridley (10 July 1906, Kibworth Harcourt, Leicestershire – 25 May 2001, Salisbury, Wiltshire) was an English ophthalmologist who invented the intraocular lens and pioneered intraocular lens surgery for cataract patients.
The Hawker Hurricane is a British single-seat fighter aircraft of the 1930s–1940s that was designed and predominantly built by Hawker Aircraft Ltd.
High heels are a type of shoe in which the heel, compared to the toe, is significantly higher off of the ground.
The human eye is an organ which reacts to light and pressure.
Hydrogen is a chemical element with symbol H and atomic number 1.
Hydrolysis is a term used for both an electro-chemical process and a biological one.
A hydrophile is a molecule or other molecular entity that is attracted to water molecules and tends to be dissolved by water.
In chemistry, hydrophobicity is the physical property of a molecule (known as a hydrophobe) that is seemingly repelled from a mass of water.
A hydroxy or hydroxyl group is the entity with the formula OH.
Hypotension is low blood pressure, especially in the arteries of the systemic circulation.
is a Japanese guitar brand owned by Hoshino Gakki.
Ice hockey is a contact team sport played on ice, usually in a rink, in which two teams of skaters use their sticks to shoot a vulcanized rubber puck into their opponent's net to score points.
In mechanics, an impact is a high force or shock applied over a short time period when two or more bodies collide.
Imperial Chemical Industries (ICI) was a British chemical company and was, for much of its history, the largest manufacturer in Britain.
Infrared radiation (IR) is electromagnetic radiation (EMR) with longer wavelengths than those of visible light, and is therefore generally invisible to the human eye (although IR at wavelengths up to 1050 nm from specially pulsed lasers can be seen by humans under certain conditions). It is sometimes called infrared light.
Injection moulding (British English) or injection molding (American English) is a manufacturing process for producing parts by injecting molten material into a mould.
Ink is a liquid or paste that contains pigments or dyes and is used to color a surface to produce an image, text, or design.
Intraocular lens (IOL) is a lens implanted in the eye as part of a treatment for cataracts or myopia.
Jan Kubíček (30 December 1927 – 14 October 2013) was a Czech painter and graphic designer, and one of the most radical Central European exponents of constructivist and concrete art.
John Henry Bonham (May 31, 1948 – September 25, 1980) was an English musician and songwriter, best known as the drummer for the British rock band Led Zeppelin.
Ken Yeang (6 October 1948) is an architect, ecologist, planner and author from Malaysia, best known for his ecological architecture and ecomasterplans that have a distinctive green aesthetic.
A lab-on-a-chip (LOC) is a device that integrates one or several laboratory functions on a single integrated circuit (commonly called a "chip") of only millimeters to a few square centimeters to achieve automation and high-throughput screening.
Laser cutting is a technology that uses a laser to cut materials, and is typically used for industrial manufacturing applications, but is also starting to be used by schools, small businesses, and hobbyists.
Laser dyes are large organic molecules with molecular weights of a few hundred mu.
LaserDisc (abbreviated as LD) is a home video format and the first commercial optical disc storage medium, initially licensed, sold and marketed as MCA DiscoVision in the United States in 1978.
Led Zeppelin were an English rock band formed in London in 1968.
Leroy Lamis (1925–2010) was an American sculptor, digital artist and art educator known for his work with Plexiglas.
Light is electromagnetic radiation within a certain portion of the electromagnetic spectrum.
Synthetic polymers are human-made polymers.
In polymer chemistry, living polymerization is a form of chain growth polymerization where the ability of a growing polymer chain to terminate has been removed.
Ludwig Drums is an American manufacturer of percussion instruments.
The lungs are the primary organs of the respiratory system in humans and many other animals including a few fish and some snails.
A luthier is someone who builds or repairs string instruments generally consisting of a neck and a sound box.
3,4-Methylenedioxymethamphetamine (MDMA), commonly known as ecstasy (E), is a psychoactive drug used primarily as a recreational drug.
Biomedical research (or experimental medicine) encompasses a wide array of research, extending from "basic research" (also called bench science or bench research), – involving fundamental scientific principles that may apply to a ''preclinical'' understanding – to clinical research, which involves studies of people who may be subjects in clinical trials.
Methacrylic acid, abbreviated MAA, is an organic compound.
Methanol, also known as methyl alcohol among others, is a chemical with the formula CH3OH (a methyl group linked to a hydroxyl group, often abbreviated MeOH).
Methyl ethyl ketone peroxide (MEKP) is an organic peroxide, a high explosive similar to acetone peroxide.
Methyl methacrylate (MMA) is an organic compound with the formula CH2.
Microencapsulation is a process in which tiny particles or droplets are surrounded by a coating to give small capsules, of many useful properties.
Microfluidics deals with the behaviour, precise control and manipulation of fluids that are geometrically constrained to a small, typically sub-millimeter, scale at which capillary penetration governs mass transport.
Relative Molecular mass or molecular weight is the mass of a molecule.
The nanometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: nm) or nanometer (American spelling) is a unit of length in the metric system, equal to one billionth (short scale) of a metre (m).
The Olympiapark München (English: Olympic Park Munich) in Munich, Germany, is an Olympic Park which was constructed for the 1972 Summer Olympics.
Organic lasers use an organic (carbon based) material as the gain medium.
Organic photonics includes the generation, emission, transmission, modulation, signal processing, switching, amplification, and detection/sensing of light, using organic optical materials.
Orthopedic surgery or orthopedics, also spelled orthopaedic, is the branch of surgery concerned with conditions involving the musculoskeletal system.
Otto Karl Julius Röhm (14 March 1876 in Öhringen, Germany – 17 September 1939 in Berlin) was one of the founders and a longtime president of the Röhm und Haas chemical company which became later in the USA the Rohm and Haas (today Dow Chemical) and in Germany the Röhm GmbH (today Evonik Degussa).
Oxygen is a chemical element with symbol O and atomic number 8.
Petroleum is a naturally occurring, yellow-to-black liquid found in geological formations beneath the Earth's surface.
Photolithography, also termed optical lithography or UV lithography, is a process used in microfabrication to pattern parts of a thin film or the bulk of a substrate.
A picture frame is a decorative edging for a picture, such as a painting or photograph, intended to enhance it, make it easier to display or protect it.
Picture framing glass ("glazing," "conservation glass," "museum quality glass") usually refers to flat glass or acrylic ("plexi") used for framing artwork and for presenting art objects in a display box (also, "conservation framing").
Plastic optical fiber (POF) (or Polymer optical fibre) is an optical fiber that is made out of polymer.
Plastic surgery is a surgical specialty involving the restoration, reconstruction, or alteration of the human body.
Plastic welding is welding for semi-finished plastic materials, and is described in ISO 472 as a process of uniting softened surfaces of materials, generally with the aid of heat (except solvent welding).
The pleural cavity is the thin fluid-filled space between the two pulmonary pleurae (known as visceral and parietal) of each lung.
Plombage was a surgical method used prior to the introduction of anti-tuberculosis drug therapy to treat cavitary tuberculosis of the upper lobe of the lung.
Polyacrylonitrile (PAN), also known as Creslan 61, is a synthetic, semicrystalline organic polymer resin, with the linear formula (C3H3N)n.
Polycarbonates (PC) are a group of thermoplastic polymers containing carbonate groups in their chemical structures.
Free-radical polymerization (FRP) is a method of polymerization by which a polymer forms by the successive addition of free-radical building blocks.
In optics, the refractive index or index of refraction of a material is a dimensionless number that describes how light propagates through that medium.
In electronics, a remote control or clicker is a component of an electronic device used to operate the device from a distance, usually wirelessly.
In semiconductor fabrication, a resist is a thin layer used to transfer a circuit pattern to the semiconductor substrate which it is deposited upon.
Riot control refers to the measures used by police, military, or other security forces to control, disperse, and arrest people who are involved in a riot, demonstration, or protest.
Rohm and Haas Company is a manufacturer of speciality chemicals for end use markets such as building and construction, electronic devices, packaging, household and personal care products.
Rubber toughening is a process in which rubber nanoparticles are interspersed within a polymer matrix to increase the mechanical robustness, or toughness, of the material.
Salvador Domingo Felipe Jacinto Dalí i Domènech, 1st Marquess of Dalí de Púbol (11 May 190423 January 1989), known professionally as Salvador Dalí, was a prominent Spanish surrealist born in Figueres, Catalonia, Spain.
A semiconductor material has an electrical conductivity value falling between that of a conductor – such as copper, gold etc.
Silicon is a chemical element with symbol Si and atomic number 14.
Silicon dioxide, also known as silica (from the Latin silex), is an oxide of silicon with the chemical formula, most commonly found in nature as quartz and in various living organisms.
Soda–lime glass, also called soda–lime–silica glass, is the most prevalent type of glass, used for windowpanes and glass containers (bottles and jars) for beverages, food, and some commodity items.
A solar cell, or photovoltaic cell, is an electrical device that converts the energy of light directly into electricity by the photovoltaic effect, which is a physical and chemical phenomenon.
Solid-state dye lasers (SSDL) were introduced in 1967 by Soffer and McFarland.
Solution polymerization is a method of industrial polymerization.
A solvent (from the Latin solvō, "loosen, untie, solve") is a substance that dissolves a solute (a chemically distinct liquid, solid or gas), resulting in a solution.
In chemistry, spectrophotometry is the quantitative measurement of the reflection or transmission properties of a material as a function of wavelength.
Spin coating is a procedure used to deposit uniform thin films to flat substrates.
The Summerland disaster occurred when a fire spread through the Summerland leisure centre in Douglas on the Isle of Man on the night of 2 August 1973.
The Supermarine Spitfire is a British single-seat fighter aircraft used by the Royal Air Force and other Allied countries before, during and after World War II.
In chemistry, a suspension is a heterogeneous mixture that contains solid particles sufficiently large for sedimentation.
Tacticity (from Greek τακτικός taktikos "of or relating to arrangement or order") is the relative stereochemistry of adjacent chiral centers within a macromolecule.
A tattoo is a form of body modification where a design is made by inserting ink, dyes and pigments, either indelible or temporary, into the dermis layer of the skin to change the pigment.
Thermal expansion is the tendency of matter to change in shape, area, and volume in response to a change in temperature.
A thermoplastic, or thermosoftening plastic, is a plastic material, a polymer, that becomes pliable or moldable above a specific temperature and solidifies upon cooling.
A Thin-film-transistor liquid-crystal display (TFT LCD) is a variant of a liquid-crystal display (LCD) that uses thin-film-transistor (TFT) technology to improve image qualities such as addressability and contrast.
In biology, tissue is a cellular organizational level between cells and a complete organ.
A tombstone is a type of print notice that is most often used in the financial industry to formally announce a particular transaction, such as an initial public offering or placement of stock of a company.
In materials science and metallurgy, toughness is the ability of a material to absorb energy and plastically deform without fracturing.
A trademark, trade mark, or trade-markThe styling of trademark as a single word is predominantly used in the United States and Philippines only, while the two-word styling trade mark is used in many other countries around the world, including the European Union and Commonwealth and ex-Commonwealth jurisdictions (although Canada officially uses "trade-mark" pursuant to the Trade-mark Act, "trade mark" and "trademark" are also commonly used).
Transmittance of the surface of a material is its effectiveness in transmitting radiant energy.
In the field of optics, transparency (also called pellucidity or diaphaneity) is the physical property of allowing light to pass through the material without being scattered.
Tuberculosis (TB) is an infectious disease usually caused by the bacterium Mycobacterium tuberculosis (MTB).
Ultimate tensile strength (UTS), often shortened to tensile strength (TS), ultimate strength, or Ftu within equations, is the capacity of a material or structure to withstand loads tending to elongate, as opposed to compressive strength, which withstands loads tending to reduce size.
Ultraviolet (UV) is electromagnetic radiation with a wavelength from 10 nm to 400 nm, shorter than that of visible light but longer than X-rays.
The viscosity of a fluid is the measure of its resistance to gradual deformation by shear stress or tensile stress.
The visible spectrum is the portion of the electromagnetic spectrum that is visible to the human eye.
Water is a transparent, tasteless, odorless, and nearly colorless chemical substance that is the main constituent of Earth's streams, lakes, and oceans, and the fluids of most living organisms.
In physics, the wavelength is the spatial period of a periodic wave—the distance over which the wave's shape repeats.
A window is an opening in a wall, door, roof or vehicle that allows the passage of light, sound, and air.
X-rays make up X-radiation, a form of electromagnetic radiation.
The 1972 Summer Olympics (German: Olympische Sommerspiele 1972), officially known as the Games of the XX Olympiad, was an international multi-sport event held in Munich, West Germany, from August 26 to September 11, 1972.
Acrylic glass, Acrylic signs, Acrylite, Acrylplast, Crystalite, Hesalite, Impact resistant window, Lucide, Lucite, Methyl methacrylate resin, Persepex, Perspective Simplex, Perspex, Plexi glass, Plexi-glass, Plexiglas, Plexiglass, Pmma, Poly (methyl methacrylate), Poly methyl methacrylate, Poly(methyl methacrylat';';'e), Poly(methyl methacrylate) (PMMA), Poly(methyl-methacrylate), Poly-methyl-methacrylate, Polyacrylate resin, Polymethyl methacrylate, Polymethylmetacrylate, Polymethylmethacrylate.