The experiments which Thomson made on atmospheric electricity at the old College tower, and by means of portable electrometers in Arran and elsewhere, can only be mentioned.
Attracted-disk-electrometers simply measure, either by weighing or by the deflection of a spring, the attractive force between two parallel disks at different potentials.
An account has been given in Chapter XI of the series of electrometers which Thomson invented for the measurement of differences of electric potential.
Thomson described in this paper six species of electrometers of his own devising.
See Lord Kelvin, "Report on Electrometersand Electrostatic Measurements," Brit.
Quadrant electrometers have also been designed especially for measuring extremely small potential differences.
The most important improvements in connexion with electrometers are due, however, to Lord Kelvin, who introduced the guard plate and used gravity or the torsion of a wire as a means for evaluating the electrical forces.
Or if, the electrometers being removed, a point be fixed at the back of the ball in its uninsulated state as at C, this point will become luminous and discharge the conductor A.
Being recharged exactly in the same manner, they produced in each of two volta-electrometers 21 cubical inches.
The introduction of common spring water in place of one of the volta-electrometers used with twenty pairs of four-inch plates (1156.
The two electrometers were connected together by means of a conductor (C) passing under the earth, and which at either of its extremities could be put in communication with either an electric machine or the ground.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "electrometers" in a variety of sentences. We hope that you will now be able to make sentences using this word.
