Electric field strength | physics | Britannica (original) (raw)
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Coulomb’s law
In principles of physical science: Fields electric field strength due to q_1 at a distance r from q_1 and is designated by E; it is clearly a vector parallel to r. At every point in space E takes a different value, determined by r, and the complete specification of E(r)—that is,… Read More
electric fields
In electric field …the value of E, called electric field strength or electric field intensity or simply the electric field. Knowledge of the value of the electric field at a point, without any specific knowledge of what produced the field, is all that is needed to determine what will happen to electric charges… Read More
electric susceptibility
In electric susceptibility …directly proportional to the average electric field strength E so that the ratio of the two, P/E, is a constant that expresses an intrinsic property of the material. The electric susceptibility, _χ_e, in the centimetre-gram-second (cgs) system, is defined by this ratio; that is, _χ_e = P/E. In the metre-kilogram-second… Read More
ionization chambers
In radiation measurement: Proportional counters …free electron in a strong electric-field. When the strength of the field is above about 104 volts per centimetre, an electron can gain enough energy between collisions to cause secondary ionization in the gas. After such an ionizing collision, two free electrons exist in place of the original one. In… Read More
