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Magnetic Developer
Magnetic developer is a fluid which makes the magnetic information written on magnetic tape or the magnetic stripe of a credit card or ATM card An ATM card is a payment card or dedicated payment card issued by a financial institution (i.e. a bank) which enables a customer to access their financial accounts via its and others' automated teller machines (ATMs) and to make approved point of ... visible to the naked eye. Magnetic developer can be found in liquid or aerosol form. When applied to a magnetic stripe, suspended metal particles will be attracted to the magnetically charged regions of the stripe as the liquid evaporates. Magnetic developer can be used to troubleshoot problems with magnetic stripes and the equipment that encodes and reads them. By making the encoding visible, one can see how encoding head alignment affects the position of the data tracks, and observe any possible magnetic damage that has occurred on the magnetic stripe. See also * Magnasee Magnet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fluid
In physics, a fluid is a liquid, gas, or other material that continuously deforms (''flows'') under an applied shear stress, or external force. They have zero shear modulus, or, in simpler terms, are substances which cannot resist any shear force applied to them. Although the term ''fluid'' generally includes both the liquid and gas phases, its definition varies among branches of science. Definitions of ''solid'' vary as well, and depending on field, some substances can be both fluid and solid. Viscoelastic fluids like Silly Putty appear to behave similar to a solid when a sudden force is applied. Substances with a very high viscosity such as pitch appear to behave like a solid (see pitch drop experiment) as well. In particle physics, the concept is extended to include fluidic matters other than liquids or gases. A fluid in medicine or biology refers any liquid constituent of the body (body fluid), whereas "liquid" is not used in this sense. Sometimes liquids given for flui ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnetism
Magnetism is the class of physical attributes that are mediated by a magnetic field, which refers to the capacity to induce attractive and repulsive phenomena in other entities. Electric currents and the magnetic moments of elementary particles give rise to a magnetic field, which acts on other currents and magnetic moments. Magnetism is one aspect of the combined phenomena of electromagnetism. The most familiar effects occur in ferromagnetic materials, which are strongly attracted by magnetic fields and can be magnetized to become permanent magnets, producing magnetic fields themselves. Demagnetizing a magnet is also possible. Only a few substances are ferromagnetic; the most common ones are iron, cobalt, and nickel and their alloys. The rare-earth metals neodymium and samarium are less common examples. The prefix ' refers to iron because permanent magnetism was first observed in lodestone, a form of natural iron ore called magnetite, Fe3O4. All substances exhibit some type of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnetic Tape
Magnetic tape is a medium for magnetic storage made of a thin, magnetizable coating on a long, narrow strip of plastic film. It was developed in Germany in 1928, based on the earlier magnetic wire recording from Denmark. Devices that use magnetic tape could with relative ease record and playback audio, visual, and binary computer data. Magnetic tape revolutionized sound recording and reproduction and broadcasting. It allowed radio, which had always been broadcast live, to be recorded for later or repeated airing. Since the early 1950s, magnetic tape has been used with computers to store large quantities of data and is still used for backup purposes. Magnetic tape begins to degrade after 10–20 years and therefore is not an ideal medium for long-term archival storage. Durability While good for short-term use, magnetic tape is highly prone to disintegration. Depending on the environment, this process may begin after 10–20 years. Over time, magnetic tape made in the 197 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnetic Stripe
The term digital card can refer to a physical item, such as a memory card on a camera, or, increasingly since 2017, to the digital content hosted as a virtual card or cloud card, as a digital virtual representation of a physical card. They share a common purpose: Identity Management, Credit card, or Debit card. A non-physical digital card, unlike a Magnetic stripe card can can emulate (imitate) any kind of card. Other common uses include loyalty card and health insurance card; physical driver's license and Social Security card are still mandated by some government agencies. A smartphone or smartwatch can store content from the card issuer; discount offers and news updates can be transmitted wirelessly, via Internet These virtual cards are used in very high volumes by the mass transit sector, replacing paper based tickets and earlier MagStrip cards. History Magnetic recording on steel tape and wire was invented by Valdemar Poulsen in Denmark around 1900 for recording aud ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Credit Card
A credit card is a payment card issued to users (cardholders) to enable the cardholder to pay a merchant for goods and services based on the cardholder's accrued debt (i.e., promise to the card issuer to pay them for the amounts plus the other agreed charges). The card issuer (usually a bank or credit union) creates a revolving account and grants a line of credit to the cardholder, from which the cardholder can borrow money for payment to a merchant or as a cash advance. There are two credit card groups: consumer credit cards and business credit cards. Most cards are plastic, but some are metal cards (stainless steel, gold, palladium, titanium), and a few gemstone-encrusted metal cards. A regular credit card is different from a charge card, which requires the balance to be repaid in full each month or at the end of each statement cycle. In contrast, credit cards allow the consumers to build a continuing balance of debt, subject to interest being charged. A credit car ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ATM Card
An ATM card is a payment card or dedicated payment card issued by a financial institution (i.e. a bank) which enables a customer to access their financial accounts via its and others' automated teller machines (ATMs) and to make approved point of purchase retail transactions (i.e. gas stations, grocery, hardware, department stores, etc.) ATM cards are not credit cards or debit cards. ATM cards are payment card size and style plastic cards with a magnetic stripe and/or a plastic smart card with a chip that contains a unique card number and some security information such as an expiration date or CVVC (CVV). ATM cards are known by a variety of names such as bank card, MAC (money access card), client card, key card or cash card, among others. Other payment cards, such as debit cards and credit cards can also function as ATM cards. Charge and proprietary cards cannot be used as ATM cards. The use of a credit card to withdraw cash at an ATM is treated differently to a point of sale ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnasee
Magnasee is a product used to visualize the magnetic fields recorded onto magnetic recording media such as magnetic tape, diskettes, and the like. The product contains very fine colloidal iron in a fast-evaporating liquid such as naphtha or fluorocarbons. The liquid is first agitated vigorously to disperse the iron. It may then be carefully poured over the magnetic media of, in the case of tape, the tape may be dipped into the open container of liquid. The iron adheres between the magnetic domains of the media, allowing the user to see where these magnetic domains have been written. Allowing the carrier liquid to evaporate allows very close visualization of the domains. Various faults in the magnetic recording process could then be visually detected. These included: * Track mis-alignments including gross azimuth errors * Missing (unrecorded) tracks * Failures of the erasure system * Lift-off of the media from the recording head(s) * After-the fact destruction of the recording v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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