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. A type of software for microcomputers that offers the user a visual display of a simulated worksheet and the means of using it for financial plans, budgets, etc.
3. A type of computer software for performing mathematical computations of numbers arranged in rows and columns, in which the numbers can depend on the values in other rows and columns, allowing large numbers of calculations to be carried out simultaneously.
The Schrödinger wave function is a function of the coordinates of the particles of a system and of time which is a solution of the Schrödinger equation and which determines the average result of every conceivable experiment on the system.
2. An electronic amplifier of sounds within a body.
Its selective controls permit a tuning for low heart tones or high pulmonary tones. It has an auxiliary output for recording or viewing audio patterns.
2. An arrangement of electrons in an atom, molecule, or solid, specified by their wave functions, energy levels, or quantum numbers.
3. The arrangement of the electron orbitals in an atom or molecule, often described in terms of he quantum numbers, energy levels, or wave-functions.
A surge arrester is a protective device designed primarily for the connection between a conductor of an electrical system and ground to limit the magnitude of transient overvoltages on equipment. A lightning arrester is really a voltage-surge arrester.
Corporations use electronic surveillance to maintain the security of their buildings and grounds.
Electronic surveillance permeates almost every aspect of life in the United States; for example, in the public sector, the president, Congress, judiciary, military, and law enforcement all use some form of this technology.
In the private sector, business competitors, convenience stores, shopping centers, apartment buildings, parking facilities, hospitals, banks, employers, and even spouses have utilized various methods of electronic surveillances.
- Improvement of security for people and property.
- Detection or prevention of criminal, wrongful, or illegal activities.
- The interception, protection, or the obtaining of valuable, useful, scandalous, or embarrassing information about a person or numerous people.
Electronic eavesdropping or electronic surveillances have several objectives:
2. An electronic circuit used to perform the function of a high-speed switch.
Applications include switching a cathode-ray oscilloscope back and forth between two inputs at such high speeds that both input waveforms appear simultaneously on the screen.3. With an X-ray machine, the on-off switch that controls the input of electricity to the X-ray machine.
2. A telephone switching system which uses a computer with a storage-containing program switching logic, whose output actuates switches that set up telephone connections which perform most telephone central office switching functions automatically.
Electronic switching systems permit custom-calling services; such as, speed dialing, call transfer, and three-way calling.3. The use of electronic circuits to perform the functions of a high-speed switch.
2. A direct input device with a special pen or cross-hairs with which the user traces the image to be digitized.
The coordinates at selected points are automatically recorded.
2. A thermometer that uses a sensor, usually a thermistor, which is placed on or near an object which is being measured.
3. An instrument which is used to measure a temperature that operates with the action of an electronic sensor which is positioned next to the substance being measured.
2. A timer using electronic circuits, either tube or transistor type, to control a time period, in place of a motor or other processes.
3. A timer which has an electronic circuit to operate a relay at a predetermined interval of time after the circuit is energized, as in timing exposures for a photographic printer or in controlling an electronic generator.
2. An electronic device that measures hydrostatic pressure within the eye.
When it is put into position, a tiny movable plate is pressed against the eye, flattening a circular section of the cornea; a current is then sent through a small electromagnet, of such value that it will just pull the plate away from the eye.
The value of the current is proportional to eye pressure and a measurement can be made in about one second.
It is usually used in the diagnosis of glaucoma.