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A 3-dimensional rhombus is called a rhomboid. It is the crystaline shape of mica.
no they are not the same paranormal activity 2 is before the 1 that mean that Katie and mica didn't die..yet
'Dielectric' is often used in a general sense to refer to a material (such as ceramic, mica, plastic or paper) which is a poor conductor of electricity. This term is used in the classical description of a capacitor -- two electric conductors separated by a dielectric. By applying electric charge to one conductor an electric field is created. The dielectric allows the electric field to pass through it and affect the other conductors; however the dielectric prevents electrons from flowing between the conductors, so the electric field remains (and the charge remains stored on the conductor). [Side note for beginners: An electric field creates a force (measured in Volts) upon an electron or charged particle which tends to make it move. The conductor allows electrons to move easily within it. The dielectric resists the movement of electrons in it.] More generally, we speak of a 'Dielectric Field' as a mathematic description of how electric charge influences the properties of the space around it. The Dielectric field interacts with space and with any material in the space to create an 'Electric Field'. In simple terms, the electric field at any point is the product of the dielectric field at that point and the 'Dielectric Constant' of the material at that point. In more general terms, the 'electric field vector' at a point is the tensor product of the 'dielectric field vector' and the 'dielectric tensor' of the material at that point. The dielectric field is not a measurable entity, but rather a mathematical tool that allows us accurately to model the electric field, which is measurable. The article on Dielectrics at http://en.wikipedia.org/wiki/Dielectric provides more description, especially on the dielectric field model.
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The most common nonferromagnesian member of the mica family is muscovite.
Both are platy, silicate, mica group minerals with perfect cleavage in one direction.
A mica capacitor is simply one that uses the mineral mica as the dielectric or insulator between plates.
Muscovite
Wood is an organic material of vegetal origin. Mica is an inorganic mineral.
pegmatite
Metallic car paint has powdered metal in it. "Mica metallic" car paint has mica, a glittery rock, in it. The mica gives the paint a neat iridescence.
Mica schist is primarily composed of mica, whereas aventurine - note the spelling- is composed of quartz with abundant inclusions of mica. This makes for a relatively hard, tough and attractive material that can be polished into jewelry and many other items.
mica has the specific gravity of 2.88
Biotite mica contains iron and/or magnesium, but muscovite mica does not.
The mineral mica is not a gemstone. It is not considered a precious mineral or gem. It is a valuable mineral that has a number of applications, and it is likely you have some mica in your home now. Mica is used in the electronics industry as an insulator beneath semiconductor packages when they are mounted on heat sinks in consumer (and other) electronic equipment.
Biotite is definitely a mineral. It's in the same family as muscovite, another mineral in the mica family.