An instrument that measures temperatures during oil-well temperature surveying.

It has a thermocouple, resistance wire, or thermistor as the temperature-sensitive element.

1. A document created by passing an electric current through a stylus onto chemically treated paper.
2. An electrochemical recording in which the chemical change is made possible by the presence of an electrolyte.

1. A document created by varying the signal of electric current flowing through a stylus moving across a sheet of paper.
2. Recording by means of a signal-actuated mechanical device; such as, a pen arm or mirror attached to the moving coil of a galvanometer.
3. A tool that transforms electrical signals into equivalent mechanical motion which is transferred to a medium by cutting, embossing, or writing.

The recording of the information contained in a modulated electron beam onto photographic or silicon resin-coated materials.

1. A method of producing a graphical record of a varying quantity or signal by controlling an electron beam with an electromagnetic field, as in a cathode-ray oscillograph.
2. The process of making a graphical record of a varying quantity or signal (or the result of such a process) by electronic procedures, involving control of an electron beam by electric or magnetic fields, as in a cathode-ray oscillograph, in contrast to light-beam recording.

1. The recording of video images by means of photographic film, or magnetic tape or disk, so the image's record can be played back in a video format at a later time.
2. The process of recording color signals onto photographic film as black and white coded images.
3. The recording of black and white or color television visual signals on a reel of photographic film including coded black and white images.

1. A document that is produced when an electric current is applied through a stylus onto a specially treated paper.
2. A recording in which the image is produced by passing electric current through the recording sheet.
3. The passage of electric current into a sheet of sensitive paper to produce a permanent record.
4. A technique which uses the passage of an electric current through a recording medium to produce a permanent image on that medium.

Recording with a procedure utilizing a signal-controlled electrostatic field.

1. In facsimile (fax) or an instrument that transmits and reproduces documents with digitized signals which are sent over telephone lines, a technique in which an image is produced on a recording medium by heat generated by electronic signals.
2. A type of electrochemical recording, used in facsimile equipment, in which the chemical change is produced principally by signal-controlled thermal action.

A sound recording technique that employs multiple microphones, with one or more microphones placed near each instrument or group of instruments.

A physical record of a musical performance which can then be played back, or reproduced.

An electrode used to measure electric potential changes in body tissue.

When used for recording, two electrodes must be used: the exploring electrode and the reference electrode.