electro-, electr-, electri-

A record of the electrical activity of the spinal cord.

A tool for detecting and recording electric signals of the spinal cord.

The process of recording and analyzing the spontaneous electrical activity of the spinal cord.

1. Produced by or a reference to static electricity (electricity produced by friction).
2. Characterized by a stationary electric charge that builds up on an insulated object; such as, a capacitor or a thundercloud.
3. Referring to stationary electric charges, or produced or caused by static charges (electric charges at rest).
4. The effects produced by electrical charges or fields, alone, without interaction with magnetic influence.

1. An instrument which uses an electrostatic field in a vacuum to greatly increase the velocity of charged particles.
2. An electrical device that uses an electrostatic field to accelerate charged particles to high velocities in a vacuum.
3. Any machine that produces electric charges by friction or, more commonly, electrostatic induction.
4. A high-voltage generator in which electric charges are generated by friction or induction, then transferred mechanically to an insulated electrode to build up a voltage which may be as high as nine mega volts.
5. An apparatus for producing up to several million volts of electrostatic energy by successive accumulation of small static charges on an insulated high-voltage metal collector.

1. An instrument consisting of an auxiliary external electrode that permits known electrostatic forces to be applied to the diaphragm of a microphone for the purpose of obtaining a primary calibration.
2. A mechanism that causes a tool to be turned on or off, or adjusted or moved.

The motor and the mechanism which moves the head assembly on a disk drive or an arm of a robot is called an actuator.

An apparatus that removes dust or other finely divided particles from a gas by charging the particles inductively with an electric field, then attracting them to highly charged collector plates.

1. An instrument used in ion optics which uses an electric field or permits the passage of ions or electrons of a certain energy while focusing them on to a smaller area.
2. A tool that filters an electron beam, permitting only electrons within an extremely narrow velocity range to pass through it.

Atomization (producing fine particles) in which a liquid jet or film is exposed to an electric field and the forces leading to atomization come from either free charges on the surface or from liquid polarization.

1. An electrostatic force of attraction applied by one charged particle to an oppositely charged particle.
2. The electrostatic force of attraction exerted by one charged particle onto another charged particle of the opposite sign.
3. The tendency of bodies to draw together when carrying opposite charges of electricity.

1. A bond between atoms or groups that carry opposite charges; or, in some cases, partial charges.
2. A chemical bond in which one atom loses an electron to form a positive ion and the other atom gains an electron to form a negative ion,
3. A valence bond in which two atoms are kept together by electrostatic forces caused by transferring one or more electrons from one atom to another atom.

A valence is the combining power of atoms or groups measured by the number of electrons the atom or group will receive, give up, or share in forming a compound.

Two conducting electrodes separated by an insulating material; such as, air, ceramic, mica, gas, paper, plastic film, or glass all of which are generally high-impedance devices.

A cathode-ray tube in which electrostatic deflection is used on the electron beam.

A cathode-ray tube is a vacuum tube in which a stream of electrons is accelerated and focused in a beam that produces traces of light on a screen at one end of the tube and which is used in television sets, computer monitors, and as an indicator in radar sets, etc.

1. An electric charge stored in a capacitor or on the surface of an insulated object.
2. The algebraic sum of all positive and negative electric charges present in a specific volume or surface element.
3. An electric charge which is in a state of equilibrium.

The property of a barrier material that facilitates or impedes the movement of electrostatic charges internally or on the surface.