The light-colored substance which is made up of an aggregation of bubbles, formed on the surface of liquids by violent agitation.
An agent added to water that causes it to become less viscous, making it better at extinguishing fires
a gas dispersed in a liquid where the gas bubbles are the discrete phase. There are many food foams including whipped creams, ice cream, carbonated soft drinks, mousses, meringues, and the head of a beer. A foam is likewise unstable and needs a stabilizing agent to form the gas bubble membrane.
Foam is a gas in a liquid colloidal system. Surfactants play an important role in their manufacture and their subsequent stability. Surfactants are used to enhance the stability of desired foams and also used to break down (degrade) unwanted foams e.g. the foams formed in effluent streams.
A lightweight, cellular plastic material containing gas-filled voids. Typical foams include urethane, PVC and polyester.
You can produce various kinds of foams by using nitrous oxide canisters designed for whipped cream. Simply fill the canister with the liquid of your choice.
A class of extinguishing agents that provide a foamy cover when mixed with water. Older foams (such as protein foam) are very heavy and smell bad when burned. A commonly used foam on burning liquid fires is Aqueous Film Forming Foam (AFFF). The purpose of foam is to cover the burning material completely, isolating it from any source of oxygen so the fire will go out. It can be used in a similar manner to prevent a flammable liquid spill from igniting. Another water additive used in firefighting is called Rapid Water. This is an agent that is added to regular water to reduce the friction between the water and the hose line. This lower friction makes it possible to pump larger volumes of water through longer hoses. The author is not aware of any departments in upstate New York that use Rapid Water. Many area fire departments carry large diameter hose (4 and 5 inches) which has much the same effect.
A dispersion of gas bubbles in a liquid, in which at least one dimension falls within the colloidal size range.
a thick substance made of very small bubbles of something ..... return
Pool noodles and camping mats are examples of closed cell foam. It is made up of tiny bubbles that withstand pressure. Because air cannot pass through it, closed cell foam doesn't compress very well. Instead of squishing, it bounces. Closed cell foam is good for weapon blades and parts that don't need heavy padding.
(1) Rigid or spongy mass formed by the dispersal of gas bubbles. (2) Whitish mass of bubbles, which are formed, on the surface of liquid.
Dispersion of air bubbles in water. Foams are stabilized by surfactants. Foam formation takes place only in the presence of surface-active molecules of emulsifiers, wetting agents, dispersants, additives or binders.
A soft cushiony material formed by creating bubbles in base materials, such as natural or synthetic rubbers, or other elastomeric materials.
Gas (such as air) dispersed in a liquid. Whipped cream is an example of a foam, as is ice cream.
a substance filled with many small bubbles making it lightweight and porous You have used so much detergent that the washing machine is overflowing with foam. foam (v), foamy (adj)
a mass of small bubbles formed in or on a liquid
a lightweight material in cellular form; made by introducing gas bubbles during manufacture
form bubbles; "The boiling soup was frothing"; "The river was foaming"; "Sparkling water"
a colloid that results from a gas being dispersed in a liquid
a dispersion in which a large proportion of gas by volume in the form of gas bubbles, is dispersed in a liquid, solid or gel
a dispersion of gas in liquid, generally air in water, where there is only a small volume of liquid compared with the large volume of gas
a gas dispersed in a liquid e
a gas trapped inside bubbles in a liquid, e
a hi-tech dish washing liquid soap
a semi-pneumatic, air-bubble filled plastic material which does not require inflation
a suppressant and it is applied directly to the flame to suppress the fire to a manageable state were it can be extinguished by ground crews
a surfactant added to water to break down and reduce the surface tension of water
A lightweight cellular material resulting from the introduction of gas bubbles into a reacting polymer.
Dispersion of a gas in a liquid.
An agglomeration of gas bubbles separated from each other by a thin liquid film. If an oil is said to not foam, the small air bubbles will quickly combine, become larger bubbles, and then break to vent to the atmosphere. If this action occurs slowly, the oil is said to foam.
A polymer that has been made porous or spongelike by the incorporation of gas bubbles.
materials that contain lots of air bubbles - Expanded polystyrene is a plastic foam that comes as rigid lightweight sheets, blocks or moulded shapes. It is used for packaging. Plastazote is foam that comes as a thin flexible sheet. It is easy to cut. You can use it for both decorative and structural purposes. Focused task task which has a clearly defined outcome
The proliferation of a vast number of bubbles in and on the surface of a wet coating material, frequently caused by high speed mixing which indices air into the liquid mixture.
A mass of bubbles on the surface of any liquid formed by injection of air.
Gas dispersed in a liquid causing an increase in the volume of the liquid. Usually seen as bubbles on the surface of the liquid which may break quickly or be quite stable.
A froth of bubbles on the surface of the water. Usually comes from soap, oil, deodorant, hair spray, suntan oil, etc., that is shed into the water as swimmers enter.
The dispersal of a gas in a liquid.
A chemical fire extinguishing mixture. It adheres to fuels, cooling and moistening them. It also excludes oxygen from them, eliminating one component fire needs to burn.
Clumps of bubbles or suds on the surface of water. Usually introduced by bathers.
a two-phase system, similar to an emulsion, in which the dispersed phase is a gas or air.
Bubbles formed on liquids by the process of agitation.
Compare with colloid. colloid in which bubbles of gas are suspended in a solid or liquid. Aerogel (solid smoke) and Styrafoam are examples of solid foams; whipped cream is an example of a liquid foam.
A product, either flexible or rigid, that has been produced by the internal generation of a gas in a fluid medium that is polymerizing while expanding in volume. The final result is either an open or closed-cell product.
Frothy bubbles that sometimes form on the hot tub water surface. Also, a polymer-based insulating material sprayed or cemented on the underside of the hot tub shell to slow heat from escaping through the shell. Heat is ALWAYS escaping off the surface of the hot tub water (see insulation).
A froth of bubbles on the surface of the water. Usually comes from overuse of algaecide but may also be caused by soaps, oils or other contaminants carried into the water by swimmers. Enzymes may be used for foam control.
A froth of bubbles on the surface of the water. Usually caused by soap, oil, deodorant, hair spray, sun tan oil, etc. that is shed into the water as swimmers enter.
an agglomeration of gas bubbles separated from each other by a thin liquid film, which is observed as a persistent phenomenon on the surface of a liquid.
Foam is a concentrate mixed with water or air and applied to any material that is on fire or could potentially catch fire. The foam creates a barrier between the material and the heat, preventing ignition of flammable gases. Foam is commonly used on flammable liquid fires (gas or oil), but is also being used in some areas for automobile & structure fire applications. Maumelle has the capability to use foam on all four rigs in its fleet.
A mass of bubbles formed on liquids by agitation.
Dispersion of gas bubbles in a solid. Composite foams include syntactic and other foams such as graphite-urethane. Thermoplastic foams are also available for molding large parts. Rigid foams are useful as core materials for sandwich construction.
A suds like extinguishing agent formed by mixing a foam-producing compound with water. Mechanical foam is produced by agitation; chemical foam is produced when two or more chemicals react.
The most general definition of foam is a substance that is formed by trapping many gas bubbles in a liquid or solid. It can also refer to anything that is analogous to such a phenomenon, such as quantum foam. Often people mean polyurethane foam (foam rubber), Styrofoam or some other manufactured foam when they are using the term.