Abstract
The effective-medium theory has been presented by many authors and widely applied. In particular, the theory is accepted as a very good first approximation for the conductivities of inhomogeneous continuous media, of random-resistor networks, and of the bond-percolation problem. But the discrepancy between the conductivity given by theory and that of the site-percolation problem is substantial. In this Brief Report we improve the theory for this problem and propose three equations for the effective conductivity in the site-percolation problem. Although the three equations are empirical, the conductivities given by these equations agree well with data from computer simulations and actual experiments for the site-percolation problem except for the (extreme) vicinity of the critical percolation probability.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
