FACTOID # 17: Though Rhode Island is the smallest state in total area, it has the longest official name: The State of Rhode Island and Providence Plantations.
 
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Encyclopedia > Vacuum impedance

The vacuum impedance, also called:

  • characteristic impedance of vacuum
  • Impedance of free space
  • Wave resistance of vacuum

is an universal constant defined as:

where

In SI units the value of is This article is in need of attention. ... This article is in need of attention. ... Cover of brochure The International System of Units. ...

ohms

 
 

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