SCALAR [SCALAR QUANTITY]
Quantity that is specified by one real number.
1. Directed line segment. 2. Row or column matrix.
Quantity which in addition to being geometrically represented by a vector also adds in accordance with the parallelogram/triangle rule.
Region in which every point has a definite vector associated with it.
Relationship which determines a vector for every particular value of a scalar parameter.
Vector whose components along the axes of a rectangular system of coordinates at a given point are equal to the partial derivatives of a given scalar function of the coordinates.
Scalar function whose gradient is the opposite vector to the vector of a given vector field.
Locus of the arrowhead of the velocity vectors of a moving point, when all the vectors are drawn from a common origin.
Maximum value of a quantity during a given interval. Note: A peak value of an oscillating quantity is usually taken as the maximum deviation of that quantity from the mean value.
Average of the squared values of a function over a given interval.
ROOT-MEAN-SQUARE [r.m.s.] VALUE
Square root of the mean-square value.
Magnitude of a quantity expressed as a function of time.
TIME CONSTANT [RELAXATION TIME]
Time taken by an exponentially decaying quantity to decrease in magnitude by a factor 1/e=0.3679.
Disturbance used to convey information.
Disturbance or signal applied to a system.
Response of a system to an input.
Disturbance, generally of a random nature , which is imposed on the output due to effects not considered in the theoretical model
Device or system with its own independent source of power.
Device whose output energy is supplied entirely through its input.
One of a set of independent variables which determine uniquely the configuration of a system.
Entirety of components functioning as a whole.
Practical realisation of a system.
Idealised, usually simplified representation of a system.
Machine or machine component to perform one or more (simple) tasks.
Any change of a system and/or its behaviour with respect to time.
Model in which physical properties are considered.
Physical model in which similarity laws related to the original are considered
Set of mathematical equations describing the physical properties of a system
Physical model in which only the mechanical properties are considered.
Model described by a finite number of ordinary (differential) equations
Model described by a finite number of partial differential or integral equations
Mechanical model consisting of both discrete model and continuous model elements