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.
2. The magnetic dipole moment which an electron possesses by virtue of its spin.
3. The total magnetic dipole moment associated with the orbital motion of all the electrons of an atom and the electron spins.
This is opposed to a nuclear magnetic moment.
2. The electronic transmission of letters, messages, and memos via a communications network; now more often via computer connections.
3. A system for sending messages by computer, Telex, facsimile telegraph, or other electronic means instead of by post.
4. Messages sent by one user of a computerized communications system and retrieved almost instantly by other users.
The messages may be transmitted with a modem through telephone lines or, in some cases, by shortwave radio and it can be in many forms, including mailgrams, twx, and facsimile transmission devices.
2. A microphone whose vibrations or sound waves act on one of the electrodes in an electron tube.
2. Microradiography of very thin specimens in which the emission of electrons from an irradiated object, either the specimen or a lead screen behind it, is used to produce a photographic image of the specimen, which is then enlarged.
Microradiography is a technique for the study of surfaces of solids by monochromatic-radiation (such as X-ray) contrast effects shown by means of projection or enlargement of a contact radiograph.
2. An electronic tool which indicates the presence of metallic or nonmetallic explosive mines under the ground or hidden in the water.
Such mechanisms should relieve hospital staff of time-consuming "human monitoring" procedures and in some cases they will enable patients to carry monitoring devices during their daily living activities.
Such instruments would make regular assessments of blood-sugar concentration in patients with diabetes mellitus (metabolic disorder affecting blood sugar levels) or process the routine checking of the blood or tissue concentrations of administered drugs.
2. A control circuit used to change or to vary the speed of a direct-current (DC) motor operated from an alternating-current (AC) power line.
Silicon controlled rectifiers or power transistors rectify or correct the voltage and vary the field current of the motor.
2. A multimeter that uses semiconductor or electron-tube circuits to drive a conventional multiple-scale meter.
3. An apparatus that employs the characteristics of an electron-tube circuit for the measurement of electrical quantities, at least one of which is voltage or current, or a single calibrated scale.
When a digital display replaces the moving-coil meter, it is called a "digital multimeter".
2. A musical device that generates sounds electronically.
2. Navigation by means of any electronic device or instrument.
3. A means of determining a geographical position using electronic instruments, principally satellite navigation equipment.
2. An electronic jammer (causing interference) that emits a radio-frequency carrier modulated with a white noise signal (noise of mixed frequency) usually derived from a gas tube; used against military enemy radar.