physical block - meaning and definition. What is physical block
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What (who) is physical block - definition

ATTRIBUTE OF A PHYSICAL SYSTEM OR BODY; OR NON-CHEMICAL PROPERTY OF A MATERIAL
Physical properties; Physical Property; Property (physical)

Block (data storage)         
SEQUENCE OF BYTES OR BITS, HAVING A NOMINAL LENGTH (A BLOCK SIZE)
Block storage; Allocated disk space; Block I/O; Block size (data storage and transmission); Blocked data; Deblocking (data storage); Deblock (data storage); Blocking (data storage); Deblocked data; Data deblocking; Data blocking; Disk block; Block (computer memory)
In computing (specifically data transmission and data storage), a block, sometimes called a physical record, is a sequence of bytes or bits, usually containing some whole number of records, having a maximum length; a block size. Data thus structured are said to be blocked.
Block (permutation group theory)         
TERM IN MATHEMATICS AND GROUP THEORY
Block system
In mathematics and group theory, a block system for the action of a group G on a set X is a partition of X that is G-invariant. In terms of the associated equivalence relation on X, G-invariance means that
block system         
TERM IN MATHEMATICS AND GROUP THEORY
Block system
¦ noun a system of railway signalling which divides the track into sections and allows no train to enter a section that is not completely clear.

Wikipedia

Physical property

A physical property is any property that is measurable, whose value describes a state of a physical system. The changes in the physical properties of a system can be used to describe its changes between momentary states. Physical properties are often referred to as observables. They are not modal properties. A quantifiable physical property is called physical quantity.

Physical properties are often characterized as intensive and extensive properties. An intensive property does not depend on the size or extent of the system, nor on the amount of matter in the object, while an extensive property shows an additive relationship. These classifications are in general only valid in cases when smaller subdivisions of the sample do not interact in some physical or chemical process when combined.

Properties may also be classified with respect to the directionality of their nature. For example, isotropic properties do not change with the direction of observation, and anisotropic properties do have spatial variance.

It may be difficult to determine whether a given property is a material property or not. Color, for example, can be seen and measured; however, what one perceives as color is really an interpretation of the reflective properties of a surface and the light used to illuminate it. In this sense, many ostensibly physical properties are called supervenient. A supervenient property is one which is actual, but is secondary to some underlying reality. This is similar to the way in which objects are supervenient on atomic structure. A cup might have the physical properties of mass, shape, color, temperature, etc., but these properties are supervenient on the underlying atomic structure, which may in turn be supervenient on an underlying quantum structure.

Physical properties are contrasted with chemical properties which determine the way a material behaves in a chemical reaction.