Search results
Results From The WOW.Com Content Network
The material may be solid, liquid, gas, a material of some intermediate characteristics such as gel or sputum, tissue, organism, or a combination of these.Even if a material sample is not countable as individual items, the quantity of the sample may still be describable in terms of its volume, mass, size, or other such dimensions.
A material property is an intensive property of a material, i.e., a physical property or chemical property that does not depend on the amount of the material. These quantitative properties may be used as a metric by which the benefits of one material versus another can be compared, thereby aiding in materials selection.
A textile sample is a piece of cloth or fabric designed to represent a larger whole. A small sample, usually taken from existing fabric, is called a swatch , whilst a larger sample, made as a trial to test print production methods, is called a strike off .
The product sample is often required when several products are acceptable, to confirm the quality and aesthetic level of the material. The size or unit of sample material usually is specified. For some materials, a mock-up or sample panel is necessary. A common example of a sample panel is a wall mock-up.
Microscopy is a category of characterization techniques which probe and map the surface and sub-surface structure of a material. These techniques can use photons, electrons, ions or physical cantilever probes to gather data about a sample's structure on a range of length scales. Some common examples of microscopy techniques include:
Sample (material), a limited quantity of something which is intended to be similar to and represent a larger amount; Biological specimen or biospecimen, an organic specimen held by a biorepository for research Laboratory specimen, a biological specimen taken by sampling; Zoological specimen, an animal or part of an animal preserved for ...
Sampling (for testing or analysis), taking a representative portion of a material or product to test (e.g. by physical measurements, chemical analysis, microbiological examination), typically for the purposes of identification, quality control, or regulatory assessment. See Sample (material). Specific types of sampling include:
A core sample is a cylindrical section of (usually) a naturally-occurring substance. Most core samples are obtained by drilling with special drills into the substance, such as sediment or rock, with a hollow steel tube, called a core drill. The hole made for the core sample is called the "core hole".