What does ER stand for?

For the films having an excess of Cd, the electrical resistivity dropped several orders of magnitude.

Another important property of the electrically conductive composites was a positive temperature coefficient (PTC) effect, which meant that the electrical resistivity of the composites increases during the heating process.

Compared with strain, the influence of temperature on the electrical resistivity was found to be insignificant, implying a lack of need for temperature correction.

Investigative methods include electrical resistivity and bore hole analysis.

As part of the study, an interactive computer program, FROST, was developed to facilitate the interpretation of the electrical resistivity and temperature data.

Logging tools are available for measuring a wide range of formation properties, including electrical resistivity (laterologs and induction logs), sonic velocity, natural radioactivity (gamma-ray log), porosity (neutron log), density, susceptibility, magnetic field orientation and strength, and temperature.

The major thrust of government involvement came under the President's Superconductivity Initiative, an 11-point plan designed to speed research on the technology that enables certain materials to lose their electrical resistivity at temperatures high enough to replace today's expensive liquid-helium cooling with more affordable liquid-nitrogen cooling techniques (SN:3/28/87, p.

SureFire Ceramic, an aluminum oxide ceramic material used in the production of spark plug insulators, is a patented material providing extremely high electrical resistivity, resulting in a spark plug of exceptional long-term dielectric durability.