CHARACTERISTIC IMPEDANCE

Domain	Definition
Mining	A. Of an explosive, the amount of energy transferred to a given rock is a linear function of the product of density and rate of detonation b. For rock, density times velocity of longitudinal waves in the roc. (references)
Source: compiled by the editor from various references; see credits.

Specialty Definition: Characteristic impedance

In radio communications, characteristic impedance (Z₀) of a uniform transmission line is the impedance of a circuit that, when connected to the output terminals of a line of arbitrary length, causes the line to appear infinitely long.

A uniform line terminated in its characteristic impedance will have no standing waves, no reflections from the end, and a constant ratio of voltage to current at a given frequency at every point on the line.

If the line is not uniform, the iterative impedance must be used.

The characteristic impedance of a linear, homogeneous, isotropic, dielectric propagation medium free of electric charge is given by the relation

where μ is the magnetic permeability and ε is the electric permittivity of the medium. Where the magnetic permeability and electric permittivity of the vacuum are used, this equation defines a fundamental physical constant, the characteristic impedance of free space and turns out to be equal to 120π (about 377) ohms.

43 48 41 52 41 43 54 45 52 49 53 54 49 43 49 4D 50 45 44 41 4E 43 45

Leonardo da Vinci (1452-1519; backwards) (references)

Binary Code (1918-1938, probably earlier) (references)

01000011 01001000 01000001 01010010 01000001 01000011 01010100 01000101 01010010 01001001 01010011 01010100 01001001 01000011 00100000 01001001 01001101 01010000 01000101 01000100 01000001 01001110 01000011 01000101

HTML Code (1990) (references)

&#67 &#72 &#65 &#82 &#65 &#67 &#84 &#69 &#82 &#73 &#83 &#84 &#73 &#67 &#32 &#73 &#77 &#80 &#69 &#68 &#65 &#78 &#67 &#69

ISO 10646 (1991-1993) (references)

0043 0048 0041 0052 0041 0043 0054 0045 0052 0049 0053 0054 0049 0043 0049 004D 0050 0045 0044 0041 004E 0043 0045

Encryption (beginner's substitution cypher): (references)

CHARACTERISTIC IMPEDANCE

Specialty Definition: CHARACTERISTIC IMPEDANCE

Mining

Specialty Definition: Characteristic impedance

Crosswords: CHARACTERISTIC IMPEDANCE

Frequency of Internet Keywords: CHARACTERISTIC IMPEDANCE

characteristic impedance

Alternative Orthography: CHARACTERISTIC IMPEDANCE

43 48 41 52 41 43 54 45 52 49 53 54 49 43 49 4D 50 45 44 41 4E 43 45

01000011 01001000 01000001 01010010 01000001 01000011 01010100 01000101 01010010 01001001 01010011 01010100 01001001 01000011 00100000 01001001 01001101 01010000 01000101 01000100 01000001 01001110 01000011 01000101

&#67 &#72 &#65 &#82 &#65 &#67 &#84 &#69 &#82 &#73 &#83 &#84 &#73 &#67 &#32 &#73 &#77 &#80 &#69 &#68 &#65 &#78 &#67 &#69

0043 0048 0041 0052 0041 0043 0054 0045 0052 0049 0053 0054 0049 0043 0049 004D 0050 0045 0044 0041 004E 0043 0045

37423552353754395243535443372434750393835483739

INDEX

Expression	Frequency per Day
characteristic impedance	10
Source: compiled by the editor from various references; see credits.