types:
matrix
(mathematics) a rectangular array of quantities or expressions set out by rows and columns; treated as a single element and manipulated according to rules
row
a linear array of numbers, letters, or symbols side by side
column
a vertical array of numbers or other information
panoply
a complete and impressive array
bank
an arrangement of similar objects in a row or in tiers
spectrum
an ordered array of the components of an emission or wave
correlation table
a two-way tabulation of the relations between correlates; row headings are the scores on one variable and column headings are the scores on the second variables and a cell shows how many times the score on that row was associated with the score in that column
calendar
a tabular array of the days (usually for one year)
file allocation table
the part of a floppy disk or hard disk where information is stored about the location of each piece of information on the disk (and about the location of unusable areas of the disk)
periodic table
(chemistry) a tabular arrangement of the chemical elements according to atomic number as based on the periodic law
dot matrix
a rectangular matrix of dots from which written characters can be formed
real matrix
a matrix whose elements are all real numbers
transpose
a matrix formed by interchanging the rows and columns of a given matrix
absorption spectrum
the spectrum of electromagnetic radiation that has passed through a medium that absorbed radiation of certain wavelengths
action spectrum
the efficiency with which electromagnetic radiation produces a photochemical reaction plotted as a function of the wavelength of the radiation
atomic spectrum
(physics) a spectrum of radiation caused by electron transitions within an atom; the series of spectrum lines is characteristic of the element
emission spectrum
spectrum of electromagnetic radiation emitted by a self-luminous source
line spectrum
a spectrum in which energy is concentrated at particular wavelengths; produced by excited atoms and ions as they fall back to a lower energy level
mass spectrum
a distribution of ions as shown by a mass spectrograph or a mass spectrometer