Glossary C

A cathode-ray tube (CRT) is a special case where this is used to generate a picture on a phosphorous screen.

Cell battery : Cell battery is a primary galvanic unit which converts chemical energy directly into electric energy. Typically consists of two electrodes of dissimilar material isolated from one another electronically in a common ironically conductive electrolyte. Examples are coin cell and button cell (miniature battery)

Clockwork pertains to any mechanism of geared wheels that is driven by a coiled spring; resembles the works of a mechanical clock

Crutch is described as a wooden or metal staff that fits under the armpit and reaches to the ground that used by persons with disability problem for mobility purposes, specifically for walking.

Standard crutches are lightweight and easily adjust to size.
Forearm crutches have contoured arm cuffs which mold to the user for extra comfort and stability.

Crushed stone is described as the product resulting from the artificial crushing of rocks, boulders, or large cobblestones with the particles resulting from the crushing operation having all faces fractured.

Cruise is defined as a survey of forest land to locate timber and estimate its quantity by species, products, size, quality, or other characteristics; and the resulting estimates from the said survey.

Crude steel is described as the molten end product after the processing of pig iron in steel making furnaces to remove excess carbon. Steel making furnaces comprise basic oxygen furnaces, electric arc (EAF) furnaces and open-hearth furnaces.

Crowns refers to the upper part of a tree, including the leaves foliage and living branches.

Crown is a part of the watch referring to the nodule extending from the case that is used to set the time, date, etc. Most pull out to set the time, in water resistant styles however, the crowns should screw down.