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  2. Hematite - Wikipedia

    en.wikipedia.org/wiki/Hematite

    Hematite (/ ˈ h iː m ə ˌ t aɪ t, ˈ h ɛ m ə-/), also spelled as haematite, is a common iron oxide compound with the formula, Fe 2 O 3 and is widely found in rocks and soils. [6] Hematite crystals belong to the rhombohedral lattice system which is designated the alpha polymorph of Fe 2 O 3. It has the same crystal structure as corundum ...

  3. Electric guitar - Wikipedia

    en.wikipedia.org/wiki/Electric_guitar

    Electric guitar design and construction vary greatly in the shape of the body and the configuration of the neck, bridge, and pickups. However, some features are present on most guitars. The photo below shows the different parts of an electric guitar. The headstock (1) contains the metal machine heads (1.1), which use a worm gear for tuning.

  4. Hematine - Wikipedia

    en.wikipedia.org/wiki/Hematine

    Hematine ring. Hematine (also magnetic hematite, hemalyke or hemalike) is an artificial magnetic material. [1] Hematine is widely used in jewelry. [citation needed]Although it is claimed by many that it is made from ground hematite or iron oxide mixed with a resin, analysis (of one object) has demonstrated it to be an entirely artificial compound, a barium-strontium ferrite.

  5. Pickup (music technology) - Wikipedia

    en.wikipedia.org/wiki/Pickup_(music_technology)

    Most electric guitars have two or three magnetic pickups. A combination of pickups is called a pickup configuration, usually notated by writing out the pickup types in order from bridge pickup through mid pickup(s) to neck pickup, using "S" for single-coil and "H" for humbucker. Typically the bridge pickup is known as the lead pickup, and the ...

  6. Solid body - Wikipedia

    en.wikipedia.org/wiki/Solid_body

    Fender Esquire 1st prototype in 1949 at Fender Guitar Factory museum Sound sample of solid-body electric guitar.. A solid-body musical instrument is a string instrument such as a guitar, bass or violin built without its normal sound box and relying on an electromagnetic pickup system to directly detect the vibrations of the strings; these instruments are usually plugged into an instrument ...

  7. Steel guitar - Wikipedia

    en.wikipedia.org/wiki/Steel_guitar

    The archetypal instrument is the Hawaiian guitar, also called a lap steel. These early acoustic instruments were not loud enough relative to other instruments, but that changed in 1934 when a steel guitarist named George Beauchamp invented the electric guitar pickup. Electrification allowed these instruments to be heard, and it also meant their ...

  8. Single coil guitar pickup - Wikipedia

    en.wikipedia.org/wiki/Single_coil_guitar_pickup

    A single-coil pickup is a type of magnetic transducer, or pickup, for the electric guitar and the electric bass. It electromagnetically converts the vibration of the strings to an electric signal. Single-coil pickups are one of the two most popular designs, along with dual-coil or "humbucking" pickups.

  9. Magnetic mineralogy - Wikipedia

    en.wikipedia.org/wiki/Magnetic_mineralogy

    Magnetic mineralogy is the study of the magnetic properties of minerals. The contribution of a mineral to the total magnetism of a rock depends strongly on the type of magnetic order or disorder. Magnetically disordered minerals (diamagnets and paramagnets) contribute a weak magnetism and have no remanence.