What's the difference between
and
Enter two words to compare and contrast their definitions, origins, and synonyms to better understand how those words are related.

Impedance vs Undefined - What's the difference?

impedance | undefined |

As a noun impedance

is impedance (physics, measure of opposition to flow of current).

As an adjective undefined is

lacking a definition or value.

impedance

English

Noun

  • (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:
    • Some argue that having impedance mismatch is difficult for programming intensive applications.
  • * 2002 , Jim Melton, Advanced SQL:1999: Understanding Object-Relational and Other Advanced Features (ISBN 1558606777), Morgan Kaufmann, page 353:
    • But the impedance mismatch between SQL and Java was no better than between SQL and other languages.
  • * 2004 , Scott W. Ambler, The Object Primer: Agile Model-Driven Development with UML 2.0 (ISBN 1397805218), Cambridge University Press, page 442:
    • Why does a technological impedance mismatch exist?

    Usage notes

    Impedance is universally given the symbol Z in technical works which is often used as a synonym for the word even in running text.

    Derived terms

    * impedance coil * characteristic impedance * image impedance * impedance of free space * impedance plethysmography

    Related terms

    * impediment

    undefined

    English

    Adjective

    (wikipedia undefined) (-)
  • Lacking a definition or value.
  • (mathematics, computing) That does not have a meaning and is thus not assigned an interpretation.
    • The result of division by zero is undefined .

    Antonyms

    * defined