267
definition of Celsius scale, i.e., the scale of temperature in degree Celsius, is
such that 100 °C = f(the temperature of the boiling point of water at 1 atm pressure) and 0 °C = f(the temperature of the freezing point of water at 1 atm pressure) [the VIM does not define this concept].
20. Public scale of properties (7.3): A scale of properties based on reference
objects that are expected to be socially available for supporting metrological
traceability [the VIM does not define this concept].
21. Local scale of properties (7.3): A scale of properties based on reference objects
that are embedded in a measuring instrument [the VIM does not define this
concept].
22. Unit (2.2.4): A reference property for a general quantity, chosen so as to identify any other individual quantity of the same kind as a (not necessarily integer)
multiple of it. The traditional term “measurement unit”, or “unit of measurement”, is misleading given that units are used also outside measurement: a better expanded term is instead “quantity unit”, or possibly “property unit”
[analogous to the VIM definition [1.9]].
23. Value of a property (2.2): An individual property identified as an element of a
given scale. Hence a value of a property is defined as the informational counterpart of a reference property in a scale. The specific mode of identification
depends on the property type. In particular, values of quantitative properties are
(not necessarily integer) multiples of an individual quantity chosen as the unit
[the VIM has a definition of this concept [1.19], but only for quantities].
24. Value of a quantity (2.2): An individual quantity identified as an element of a
scale of quantitative properties, usually as the product of a number and a unit
[analogous to the VIM definition [1.19]].
25. Numerical value of a quantity (2.2.4): The number by which a unit is multiplied in a value of a quantity [analogous to the VIM definition [1.20]].
26. Basic Evaluation Equation (BEE) (2.2): An equation of the form
property of an object value of a property
=
stating the equality of a property of an object and a value of a property, each
asserted to be a distinct way of identifying the same individual property. A
Basic Evaluation Equation is the simplest case of a measurement result [the
VIM does not define this concept].
27. Measurement (Chaps. 2 and 7, and 8.3): An empirical and informational process designed on purpose, whose input is a property of an object and that produces justified information in the form of values of that property [a generalization
of the VIM definition [2.1]].
Fig. A.2 The black box model of the key entities related to and their
relations
Appendix A: A basic concept system of measurement
definition of Celsius scale, i.e., the scale of temperature in degree Celsius, is
such that 100 °C = f(the temperature of the boiling point of water at 1 atm pressure) and 0 °C = f(the temperature of the freezing point of water at 1 atm pressure) [the VIM does not define this concept].
20. Public scale of properties (7.3): A scale of properties based on reference
objects that are expected to be socially available for supporting metrological
traceability [the VIM does not define this concept].
21. Local scale of properties (7.3): A scale of properties based on reference objects
that are embedded in a measuring instrument [the VIM does not define this
concept].
22. Unit (2.2.4): A reference property for a general quantity, chosen so as to identify any other individual quantity of the same kind as a (not necessarily integer)
multiple of it. The traditional term “measurement unit”, or “unit of measurement”, is misleading given that units are used also outside measurement: a better expanded term is instead “quantity unit”, or possibly “property unit”
[analogous to the VIM definition [1.9]].
23. Value of a property (2.2): An individual property identified as an element of a
given scale. Hence a value of a property is defined as the informational counterpart of a reference property in a scale. The specific mode of identification
depends on the property type. In particular, values of quantitative properties are
(not necessarily integer) multiples of an individual quantity chosen as the unit
[the VIM has a definition of this concept [1.19], but only for quantities].
24. Value of a quantity (2.2): An individual quantity identified as an element of a
scale of quantitative properties, usually as the product of a number and a unit
[analogous to the VIM definition [1.19]].
25. Numerical value of a quantity (2.2.4): The number by which a unit is multiplied in a value of a quantity [analogous to the VIM definition [1.20]].
26. Basic Evaluation Equation (BEE) (2.2): An equation of the form
property of an object value of a property
=
stating the equality of a property of an object and a value of a property, each
asserted to be a distinct way of identifying the same individual property. A
Basic Evaluation Equation is the simplest case of a measurement result [the
VIM does not define this concept].
27. Measurement (Chaps. 2 and 7, and 8.3): An empirical and informational process designed on purpose, whose input is a property of an object and that produces justified information in the form of values of that property [a generalization
of the VIM definition [2.1]].
Fig. A.2 The black box model of the key entities related to
relations
Appendix A: A basic concept system of measurement