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Form Factor (other)
Form factor or form-factor may refer to: Manufacturing * Form factor (design), an aspect of design which defines and prescribes the size, shape, and other physical specifications of hardware components, particularly in electronics and electronic packaging ** Form factor (mobile phones) ** Computer form factor, the specifications of computer motherboards ** Hard disk drive form factor * FormFactor (company), a semiconductor test and measurement company, acquired Cascade Microtech in 2016 Scattering theory * Form factor (quantum field theory), a semi-empirical formula used in effective quantum field theories * Atomic form factor, or atomic scattering factor, a measure of the amplitude of a wave scattered from an isolated atom * Electric form factor, the Fourier transform of electric charge distribution in space * Magnetic form factor, the Fourier transform of an electric current distribution in space Other sciences * Form factor (electronics), characterizing the function ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Form Factor (design)
Form factor is a hardware design aspect that defines and prescribes the size, shape, and other physical specifications of components, particularly in electronics. A form factor may represent a broad class of similarly sized components, or it may prescribe a specific standard. It may also define an entire system, as in a computer form factor. Evolution and standardization As electronic hardware has become smaller following Moore's law and related patterns, ever-smaller form factors have become feasible. Specific technological advances, such as PCI Express, have had a significant design impact, though form factors have historically been slower to evolve than individual components. Standardization of form factors is vital for compatibility of hardware from different manufacturers. Trade-offs Smaller form factors may offer more efficient use of limited space, greater flexibility in the placement of components within a larger assembly, reduced use of material, and greater ease of tran ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Form Factor (mobile Phones)
The form factor of a mobile phone is its size, shape, and style, as well as the layout and position of its major components. With one non-movable section Bar A bar (also known as a slab, block, candybar) phone takes the shape of a cuboid, usually with rounded corners and/or edges. The name is derived from the rough resemblance to a chocolate bar in size and shape. This form factor is widely used by a variety of manufacturers, such as Nokia and Sony Ericsson. Bar-type smartphones commonly have the screen and keypad on a single face. Sony had a well-known 'Mars Bar' phone model CM-H333 in 1993. Bar phones without a full keyboard tend to have a 3×4 numerical keypad; text is often generated on such systems using the Text on 9 keys algorithm. Keyboard bars These are variants of bars that have a full QWERTY keyboard on the front. While they are technically the same as a regular bar phone, the keyboard and all the buttons make them look significantly different. Devices like these we ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computer Form Factor
Form factor is a hardware design aspect that defines and prescribes the size, shape, and other physical specifications of components, particularly in electronics. A form factor may represent a broad class of similarly sized components, or it may prescribe a specific standard. It may also define an entire system, as in a computer form factor. Evolution and standardization As electronic hardware has become smaller following Moore's law and related patterns, ever-smaller form factors have become feasible. Specific technological advances, such as PCI Express, have had a significant design impact, though form factors have historically been slower to evolve than individual components. Standardization of form factors is vital for compatibility of hardware from different manufacturers. Trade-offs Smaller form factors may offer more efficient use of limited space, greater flexibility in the placement of components within a larger assembly, reduced use of material, and greater ease of tran ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hard Disk Drive Form Factor
A hard disk drive (HDD), hard disk, hard drive, or fixed disk is an electro-mechanical data storage device that stores and retrieves digital data using magnetic storage with one or more rigid rapidly rotating platters coated with magnetic material. The platters are paired with magnetic heads, usually arranged on a moving actuator arm, which read and write data to the platter surfaces. Data is accessed in a random-access manner, meaning that individual blocks of data can be stored and retrieved in any order. HDDs are a type of non-volatile storage, retaining stored data when powered off. Modern HDDs are typically in the form of a small rectangular box. Introduced by IBM in 1956, HDDs were the dominant secondary storage device for general-purpose computers beginning in the early 1960s. HDDs maintained this position into the modern era of servers and personal computers, though personal computing devices produced in large volume, like cell phones and tablets, rely on fl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
FormFactor (company)
Cascade Microtech is a semiconductor test equipment manufacturer based in Beaverton in the Portland metropolitan area of the United States. Founded in 1983, the Oregon-based company employs nearly 400 people. Formerly publicly traded company as CSCD on the NASDAQ, the company is now fully merged with FormFactor, Inc. History In the early 1980s, Eric W. Strid and K. Reed Gleason, employees at Tektronix (Tek), attempted to get their bosses to make a microwave wafer probe for testing microchips. Management declined, but did license the technology to the two, leading to the formation of Cascade Microtech in 1982 on a part-time basis. Dale E. Carlton joined the company as well, and in 1983 they produced their first product. The founders had also worked for Tek spin-off of TriQuint Semiconductor. The company turned profitable in 1984, and all left Tektronix by 1985. In May 1986, the young company leased a office in the Beaverton Tech Center. By 1989, the company had grown to 55 emplo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cascade Microtech
Cascade Microtech is a semiconductor test equipment manufacturer based in Beaverton in the Portland metropolitan area of the United States. Founded in 1983, the Oregon-based company employs nearly 400 people. Formerly publicly traded company as CSCD on the NASDAQ, the company is now fully merged with FormFactor, Inc. History In the early 1980s, Eric W. Strid and K. Reed Gleason, employees at Tektronix (Tek), attempted to get their bosses to make a microwave wafer probe for testing microchips. Management declined, but did license the technology to the two, leading to the formation of Cascade Microtech in 1982 on a part-time basis. Dale E. Carlton joined the company as well, and in 1983 they produced their first product. The founders had also worked for Tek spin-off of TriQuint Semiconductor. The company turned profitable in 1984, and all left Tektronix by 1985. In May 1986, the young company leased a office in the Beaverton Tech Center. By 1989, the company had grown to 55 emplo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Form Factor (quantum Field Theory)
In elementary particle physics and mathematical physics, in particular in effective field theory, a form factor is a function that encapsulates the properties of a certain particle interaction without including all of the underlying physics, but instead, providing the momentum dependence of suitable matrix elements. It is further measured experimentally in confirmation or specification of a theory—see experimental particle physics. Photon–nucleon example For example, at low energies the interaction of a photon with a nucleon is a very complicated calculation involving interactions between the photon and a sea of quarks and gluons, and often the calculation cannot be fully performed from first principles. Often in this context, form factors are also called "structure functions", since they can be used to describe the structure of the nucleon. However, the generic Lorentz-invariant form of the matrix element for the electromagnetic current interaction is known, : \varepsilo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atomic Form Factor
In physics, the atomic form factor, or atomic scattering factor, is a measure of the scattering amplitude of a wave by an isolated atom. The atomic form factor depends on the type of scattering, which in turn depends on the nature of the incident radiation, typically X-ray, electron or neutron. The common feature of all form factors is that they involve a Fourier transform of a spatial density distribution of the scattering object from real space to momentum space (also known as reciprocal space). For an object with spatial density distribution, \rho(\mathbf), the form factor, f(\mathbf), is defined as f(\mathbf)=\int \rho(\mathbf) e^\mathrm^3\mathbf, where \rho(\mathbf) is the spatial density of the scatterer about its center of mass (\mathbf=0), and \mathbf is the momentum transfer. As a result of the nature of the Fourier transform, the broader the distribution of the scatterer \rho in real space \mathbf, the narrower the distribution of f in \mathbf; i.e., the faster the dec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Form Factor
The electric form factor is the Fourier transform of electric charge distribution in a nucleon. Nucleons (protons and neutrons) are made of up and down quarks which have charges associated with them (2/3 & -1/3, respectively). The study of Form Factors falls within the regime of Perturbative QCD. The idea originated from young William Thomson See also *Form factor (other) Form factor or form-factor may refer to: Manufacturing * Form factor (design), an aspect of design which defines and prescribes the size, shape, and other physical specifications of hardware components, particularly in electronics and electroni ... Electrodynamics {{particle-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnetic Form Factor
In electromagnetism, a magnetic form factor is the Fourier transform of an electric charge distribution in space. See also For the form factor relevant to magnetic diffraction of free neutrons by unpaired outer electrons of an atom see also: atomic form factor In physics, the atomic form factor, or atomic scattering factor, is a measure of the scattering amplitude of a wave by an isolated atom. The atomic form factor depends on the type of scattering, which in turn depends on the nature of the incident r ... External links Magnetic form factors Andrey Zheludev, HFIR Center for Neutron Scattering, Oak Ridge National Laboratory"The magnetic form factor of the neutron" E.E.W. Bruins, November 1996 Electromagnetism {{math-physics-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Form Factor (electronics)
In electronics or electrical engineering the form factor of an alternating current waveform (signal) is the ratio of the RMS ( root mean square) value to the average value (mathematical mean of absolute values of all points on the waveform). It identifies the ratio of the direct current of equal power relative to the given alternating current. The former can also be defined as the direct current that will produce equivalent heat. Calculating the form factor For an ideal, continuous wave function over time T, the RMS can be calculated in integral form: X_\mathrm = \sqrt The rectified average is then the mean of the integral of the function's absolute value: X_\mathrm = The quotient of these two values is the form factor, k_\mathrm, or in unambiguous situations, k. k_\mathrm = \frac \mathrm \mathrm = \frac = \frac X_\mathrm reflects the variation in the function's distance from the average, and is disproportionately impacted by large deviations from the unrectified a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Form Factor (radiative Transfer)
In radiative heat transfer, a view factor, F_, is the proportion of the radiation which leaves surface A that strikes surface B. In a complex 'scene' there can be any number of different objects, which can be divided in turn into even more surfaces and surface segments. View factors are also sometimes known as configuration factors, form factors, angle factors or shape factors. Summation of view factors Because radiation leaving a surface is conserved, the sum of all view factors ''from'' a given surface, S_i, is unity: :\sum_^n = 1 For example, consider a case where two blobs with surfaces ''A'' and ''B'' are floating around in a cavity with surface ''C''. All of the radiation that leaves ''A'' must either hit ''B'' or ''C'', or if ''A'' is concave, it could hit ''A''. 100% of the radiation leaving ''A'' is divided up among ''A'', ''B'', and ''C''. Confusion often arises when considering the radiation that ''arrives'' at a ''target'' surface. In that case, it generally does n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
