The appearance of enclosed or broken macroscopic cavities in a body or in a glaze or other coating during firing.



Related Terms

FREEZING DRIZZLE

Drizzle that falls in liquid form but freezes upon impact to form a coating of glaze upon the ground and exposed objects.

GLAZE

A coating of ice, generally clear and smooth but usually contain- ing some air pockets, formed on exposed objects by the freezing of a film of super cooled water deposited by rain, drizzle, fog, or possibly condensed from super cooled water vapor. Glaze is denser, harder and more transparent than either rime or hoarfrost Also called GLAZE ICE, GLAZED FROST VERGLAS.

COMBUSTION CHAMBER

An enclosed space provided for the combustion of fuel.

VENT

An opening in a vessel or other enclosed space for the removal of gas or vapor.

LAMINAR FLOW

Laminar flow described as a series of liquid cylinders in the pipe enclosed in each other, where the innermost parts flow the fastest, and the cylinder touching the pipe is steady. Re < 2300 (Reynolds number)

FLAME ARRESTOR

A device fitted in gas vent pipelines to arrest the passage of flame into enclosed spaces.

HOLD SPACE

The space enclosed by the ship’s structure in which a cargo containment system is situated.

GAS-FREEING

The removal of toxic, and/or flammable gas from a tank or enclosed space with inert gas followed by the introduction of fresh air.

SHELL and TUBE CONDENSER

A heat exchanger where one fluid circulates through tubes enclosed between two end-plates in a cylindrical shell and where the other fluid circulates inside the shell.

FURNACE

An enclosed space provided for the combustion of fuel.

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