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The table data are as follows.

- Material, Conductors, Silver. Conductivity sigma (Siemens per meter), 6.2 multiply by 10 to the power of 7.

- Material, Conductors, Copper. Conductivity sigma (Siemens per meter), 5.8 multiply by 10 to the power of 7.

- Material, Conductors, Gold. Conductivity sigma (Siemens per meter), 4.1 multiply by 10 to the power of 7.

- Material, Conductors, Aluminum. Conductivity sigma (Siemens per meter), 3.5 multiply by 10 to the power of 7.

- Material, Conductors, Tungsten. Conductivity sigma (Siemens per meter), 1.8 multiply by 10 to the power of 7.

- Material, Conductors, Zinc. Conductivity sigma (Siemens per meter), 1 .7 multiply by 10 to the power of 7.

- Material, Conductors, Brass. Conductivity sigma (Siemens per meter), 1.5 multiply by 10 to the power of 7.

- Material, Conductors, Iron. Conductivity sigma (Siemens per meter), 10 to the power of 7.

- Material, Conductors, Bronze. Conductivity sigma (Siemens per meter, 10 to the power of 7.

- Material, Conductors, Tin. Conductivity sigma (Siemens per meter), 9 multiply by 10 to the power of 6.

- Material, Conductors, Lead. Conductivity sigma (Siemens per meter), 5 multiply by 10 to the power of 6.

- Material, Conductors, Mercury. Conductivity sigma (Siemens per meter), 10 to the power of 6.

- Material, Conductors, Carbon. Conductivity sigma (Siemens per meter), 3 multiply by 10 to the power of 4.

- Material, Conductors, Seawater. Conductivity sigma (Siemens per meter), 4.

- Material, Conductors, Animal body (average). Conductivity sigma (Siemens per meter), 0.3 (poor conductor).

- Material, Semiconductors, Pure germanium. Conductivity sigma (Siemens per meter), 2.2.

- Material, Semiconductors, Pure silicon. Conductivity sigma (Siemens per meter), 4.4 multiply by 10 to the power of negative 4.

- Material, Insulators, Wet soil. Conductivity sigma (Siemens per meter), similar to 10 to the power of negative 2.

- Material, Insulators, Fresh water. Conductivity sigma (Siemens per meter), similar to 10 to the power of negative 3.

- Material, Insulators, Distilled water. Conductivity sigma (Siemens per meter), similar to 10 to the power of negative 4.

- Material, Insulators, Dry soil. Conductivity sigma (Siemens per meter), similar to 10 to the power of negative 4.

- Material, Insulators, Glass. Conductivity sigma (Siemens per meter), 10 to the power of negative 12.

- Material, Insulators, Hard rubber. Conductivity sigma (Siemens per meter), 10 to the power of negative 15.

- Material, Insulators, Paraffin. Conductivity sigma (Siemens per meter), 10 to the power of negative 15.

- Material, Insulators, Mica. Conductivity sigma (Siemens per meter), 10 to the power of negative 15.

- Material, Insulators, Fused quartz. Conductivity sigma (Siemens per meter), 10 to the power of negative 17.

- Material, Insulators, Wax. Conductivity sigma (Siemens per meter), 10 to the power of negative 17.