electro-, electr-, electri-

1. A relay in which two or more conductors which are separated by insulating material move because of the mutual attraction or by repulsion that is produced by electric charges applied to the conductors.
2. A relay whose actuator element consists of non-conducting media separating two or more conductors which change their relative positions because of the mutual attraction or repulsion of electric charges applied to the conductors.

The electrostatic repulsion force of repulsion exerted by one charged particle on another charged particle of the same sign or a symbol that identifies a positive or negative number.

1. A scanning method in which an electrostatic field directs an electron beam.
2. Scanning or the process of directing a radio-frequency beam successively over all points in a given region of space which involves electrostatic deflection of an electron beam.

1. A process in which an electrostatic separator sorts out or reorders a mixture of finely pulverized materials.
2. A separation of finely pulverized materials by placing them in electrostatic separators.

1. An apparatus in which a mixture of finely pulverized materials falls through a strong electric field between charged electrodes and is sorted out to fall into different receptacles.
2. A separator in which a finely pulverized mixture falls through a powerful electric field between two electrodes.

Materials with different specific inductive capacitances (capabilities of bodies, system, circuits, or devices for storing electric charges) are deflected by varying amounts and fall into different sorting chutes.

1. A list of materials which produce an electrostatic charge when rubbed together, arranged in such an order that a material has a positive charge when rubbed with a material below it in the list, and has a negative charge when rubbed with a material above it in the list.
2. A type of contact electrification in which certain materials become electrically charged after they come into contact with a different material and are then separated by rubbing.

The polarity and strength of the charges which are produced are determined by the materials, surface roughness, temperature, and other characteristics.

1. A shield that prevents electrostatic coupling between circuits, but allows electromagnetic coupling.
2. A metallic enclosure or screen placed around an apparatus so it will not be affected by external electric fields.
3. A grounded metal screen, sheet, or enclosure placed around an apparatus or between two appliances to prevent electric fields from acting through the shield.

It can prevent interaction between the electric fields of adjacent parts on a chassis.

1. A material which decreases the interaction of electric fields.
2. The placing of a grounded metal screen, sheet, or enclosure around a device or between two devices to prevent electric fields from interacting.

A speaker in which mechanical forces are produced by the action of electrostatic fields.

An electron tube using cathode-ray beam scanning and charge storage for the introduction, storage, and removal of information.

1. An electrostatic field acting on an insulator, which produces polarization in the insulator and causes an electrical breakdown if it is raised beyond a certain intensity.
2. An electrostatic area which acts on an insulator.

The field generates polarization in the insulator and causes an electrical breakdown if it is raised beyond a speciic intensity.

A camera in which images are stored electrostatically on a plastic tape.

It is designed for use in satellites, where the stored image is not damaged by Van Allen or other cosmic radiation in the upper atmosphere.

1. A transducer consisting of a set electrode and a movable electrode, charged electrostatically in opposite polarity.

The motion of the movable electrode changes the capacitance between the electrodes and so makes the applied voltage change in proportion to the amplitude of the electrode's motion.

2. A transducer which consists of a capacitor, at least one plate of which can be set into vibration.

Its operation depends on the interaction between its electric field and a change in its electrostatic capacity.

1. A tweeter loudspeaker or a loudspeaker designed to handle only the higher audio frequencies in which a flat metal diaphragm is driven directly by a varying high voltage applied between the diaphragm and a fixed metal electrode.
2. A speaker with a movable flat metal diaphragm and a non-movable metal electrode capable of reproducing high audio frequencies.

The diaphragm is driven by the varying high voltages applied across it and the electrode.

1. Any electrical unit of measure based on the attraction or repulsion of a static charge, as distinguished from an electromagnetic unit, which is defined in terms of the attraction or repulsion of magnetic poles.
2. A unit based primarily upon the force exerted between two electric charges.
3. An electric unit based primarily on the dynamic interaction of electric charges.

It is defined as a charge which, if concentrated on a small sphere, would repel with a force of one dyne which is a similar charge of one centimeter away in a vacuum.