electro-, electr-, electri-
(Greek > Latin: electric, electricity; from amber, resembling amber, generated from amber which when rubbed vigorously [as by friction], produced the effect of static electricity)
Electronics in our lives consists of numerous tools
Equipment which we use everyday relies on electronics to function including calculators, car controls, cameras, washing machines, medical scanners, mobile telephones, radar systems, computers; as well as many other applications or devices which are listed in this unit.
A dynode is an electrode whose primary function is the secondary emission of electrons which are used in multiplier phototubes and some types of television camera tubes.
2. An instrument consisting of an electron tube in which an accelerated beam of electrons produces images on a fine-grain photographic emulsion.
An image produced with this tool.
2. The use of image tubes to form intensified electron images of astronomical objects and record them directly on film or film-plates
An electron-optical lens focuses the highly accelerated electrons into a tiny spot.
2. An electron tube in which stream of electrons having different velocities interact and cause a progressive change in signal modulation along their length.
Electrodes are placed on the skin around the eye and the individual is subjected to a variety of stimuli so that the quality of eye movements can be determined.
2. A method of assessing and recording eye movements by measuring the electric activity of the extraocular muscles.
3. The registering of eye movements in spontaneous and induced nystagmus, using either a bioelectric or a photoelectric technique.
The bioelectric method records the changes in electrical potential produced by movements of the eye in the plane of two electrodes placed on either side of the eye or, if vertical nystagmus is to be measured, then the two electrodes are positioned above and below the eye.
Its important clinical application is the testing of vestibular function or the sense of balance and spatial orientation.
2. A record of the standing voltage between the front and back of the eye which is correlated with eyeball movement and obtained by electrodes placed on the skin near the eye.
3. A record of the difference in electrical charge between the front and back of the eye that is correlated with eyeball movement; as in REM sleep, and that is obtained by electrodes placed on the skin near the eye.