Impedance vs Resistivity - What's the difference?
impedance | resistivity |
(label) A measure of the opposition to the flow of an alternating current in a circuit; the aggregation of its resistance, and inductive and capacitive reactances; the ratio of voltage to current treated as complex quantities.
(label) A quantity analogous to electrical impedance in some other energy domain
# a measure of opposition to motion of something subjected to a force; the ratio of force to velocity treated as complex quantities.
# the ratio of sound pressure to volume flow rate treated as complex quantities.
a measure of the opposition caused by differences between two paradigms, especially between object-oriented development and relational databases
* 1997 , Bhavani M. Thuraisingham, Data Management Systems: Evolution and Interoperation (ISBN 0849394937), CRC Press, page 33:
* 2002 , Jim Melton, Advanced SQL:1999: Understanding Object-Relational and Other Advanced Features (ISBN 1558606777), Morgan Kaufmann, page 353:
* 2004 , Scott W. Ambler, The Object Primer: Agile Model-Driven Development with UML 2.0 (ISBN 1397805218), Cambridge University Press, page 442:
(physics) In general, the resistance to electric current of a material. In particular, the degree to which a material resists the flow of electricity or heat.
The reciprocal of conductivity.
SI unit (electricity): ohm-metre (?-m)
In physics terms the difference between impedance and resistivity
is that impedance is a quantity analogous to electrical impedance in some other energy domain while resistivity is in general, the resistance to electric current of a material. In particular, the degree to which a material resists the flow of electricity or heat.impedance
English
Noun
- Some argue that having impedance mismatch is difficult for programming intensive applications.
- But the impedance mismatch between SQL and Java was no better than between SQL and other languages.
- Why does a technological impedance mismatch exist?