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DM terms 1
Terminology of Physical properties
| Question | Answer |
|---|---|
| Degree of saturation of a particular hue | chroma |
| Change in length per unit of original length of a material when its temperature is raised 1° K | Coefficient of thermal expansion (linear coefficient of expansion) |
| Sensation induced from light of varying wavelengths reaching the eye | Color |
| Chemical or electrochemical process in which a solid, usually a metal, is attacked by an environmental agent, resulting in partial or complete dissolution | Corrosion |
| Time-dependent plastic strain of a material under a static load or constant stress | Creep |
| Accelerated attack occurring on a less noble metal when electrochemically dissimilar metals are in electrical contact within a liquid corrosive environment | Galvanic corrosion (electrogalvanism) |
| Pain sensation caused by the electric current generated when two dissimilar metals are brought into contact in the oral environment | Galvanic Shock |
| Resistance of a material to being indented, cut, or scratched | Hardness |
| Dominant color of an object, for example, red, green, or blue | Hue |
| Phenomenon in which the color of an object under one type of light appears to change when illuminated by a different light source | Metamerism |
| Study of the deformation and flow characteristics of matter | Rheology |
| Irreversible (plastic) deformation of metal frameworks of fixed partial dentures in the firing temperature range of ceramic veneers | Sag |
| Process by which a metal surface is dulled or discolored when a reaction with a sulfide, oxide, chloride, or other chemical causes a thin film to form | Tarnish |
| Property that describes the thermal energy transport in watts per second through a specimen 1 cm thick with a cross-sectional area of 1 cm2 when the temperature differential between the surfaces of the specimen perpendicular to the heat flow is 1° K | Thermal conductivity (coefficient of thermal conductivity) |
| Property of certain gels or other materials to become liquefied (less viscous) when shaken, stirred, patted, or vibrated | Thixotropic |
| Relative lightness or darkness of a color | Value |
| Resistance of a fluid to flow | Viscosity |
| Loss of material from a surface caused by a mechanical action or through a combination of chemical and mechanical actions | Wear, abrasion, and erosion |
Created by:
sean.sebourn
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