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. An electrode filled with therapeutic agents.
2. Electricity generated by heat.
3. Electricity produced by the direct action of heat or the direct conversion of heat into electricity; such as, in a thermocouple.
When two metals are placed in electric contact, electrons flow out of the one in which the electrons are less bound and into the other.
The binding is measured by the location of the so-called Fermi level of electrons in the metal; the higher the level, the lower is the binding.
The Fermi level represents the demarcation in energy within the conduction band of a metal between the energy levels occupied by electrons and those that are unoccupied. It is important in determining the electrical and thermal properties of solids.
The Fermi level is the measure of the energy of the least tightly held electrons within a solid; named for Enrico Fermi, Italian-born American physicist who first proposed it and who was one of the chief architects of the nuclear age.
He developed the mathematical statistics required to clarify a large class of subatomic phenomena, explored nuclear transformations caused by neutrons, and directed the first controlled chain reaction involving nuclear fission.
2. A method of pain control with the application of electric impulses to the nerve endings.
This is done through electrodes which are placed on the skin and attached to a stimulator with flexible wires.
The electric impulses which are generated are similar to those of the body; however, they are different enough to block the transmission of pain signals to the brain making this procedure noninvasive and nonaddictive, and with no known side effects.
2. Referring to a microscope in which an electron beam replaces light to form an image.
3. A technique using an electron microscope in which a beam of electrons is focused by an electromagnetic lens and directed onto an extremely thin specimen.
The emerging electrons are focused and directed by a second lens onto a fluorescent screen.
The magnified image which is produced is 1000 times greater than that produced by an optic microscope and well resolved, but it is two-dimensional because of the thinness of the specimen.
Frictional electricity was supposedly known to the ancient Greeks, particularly Thales of Miletus, who observed about 600 B.C. that when amber was rubbed, it would attract small bits of matter. The term "frictional electricity" gave way to "triboelectricity", although since tribo means "to rub", the newer term does little to change the concept.
2. A process of charge separation that involves the rubbing together of dissimilar material surfaces; such as, blowing dust which may charge fences and other metallic objects to such an extent that slight shocks are felt when touched.
The triboelectric series is a classification scheme for the ordering of the tendency for positive charge acquisition in rubbing. The detailed physical mechanism in triboelectrification is a long unsolved problem.