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  2. Polycarbonate - Wikipedia

    en.wikipedia.org/wiki/Polycarbonate

    Density ρ) 1.20–1.22 g/cm 3 ... and Bayer began commercial production under the trade name Makrolon in 1958. GE began production under the name Lexan in 1960, ...

  3. List of thermal conductivities - Wikipedia

    en.wikipedia.org/wiki/List_of_thermal_conductivities

    NC-23, Cold Crushing Strength=145 lbs/inch2, density=36 lbs/ft3 NC-26, Cold Crushing Strength=220 lbs/inch2, density=46 lbs/ft3

  4. FR-4 - Wikipedia

    en.wikipedia.org/wiki/FR-4

    FR-4 (or FR4) is a NEMA grade designation for glass-reinforced epoxy laminate material. FR-4 is a composite material composed of woven fiberglass cloth with an epoxy resin binder that is flame resistant (self-extinguishing).

  5. Densities of the elements (data page) - Wikipedia

    en.wikipedia.org/wiki/Densities_of_the_elements...

    New York: The International Nickel Company, Inc., 1941: 16. — "Values ranging from 21.3 to 21.5 gm/cm 3 at 20 °C have been reported for the density of annealed platinum; the best value being about 21.45 gm/cm 3 at 20 °C." 21.46 g/cm 3 — Rose, T. Kirke. The Precious Metals, Comprising Gold, Silver and Platinum. New York: D. Van Nostrand ...

  6. LExan Bubble Chamber - Wikipedia

    en.wikipedia.org/wiki/LExan_Bubble_Chamber

    LEBC2, the Lexan bubble chamber, which had a diameter of 20 cm and was made of transparent plastic. The construction of the LExan Bubble Chamber, LEBC, was approved by the CERN Research Board on 16 November 1978. [1] Bubble chambers are similar to cloud chambers, both in application and in basic principle.

  7. Specific weight - Wikipedia

    en.wikipedia.org/wiki/Specific_weight

    The specific weight, also known as the unit weight (symbol γ, the Greek letter gamma), is a volume-specific quantity defined as the weight W divided by the volume V of a material: = / Equivalently, it may also be formulated as the product of density, ρ, and gravity acceleration, g: = Its unit of measurement in the International System of Units (SI) is newton per cubic metre (N/m 3), with ...

  8. Shear modulus - Wikipedia

    en.wikipedia.org/wiki/Shear_modulus

    The shear modulus is one of several quantities for measuring the stiffness of materials. All of them arise in the generalized Hooke's law: . Young's modulus E describes the material's strain response to uniaxial stress in the direction of this stress (like pulling on the ends of a wire or putting a weight on top of a column, with the wire getting longer and the column losing height),

  9. Expanded clay aggregate - Wikipedia

    en.wikipedia.org/wiki/Expanded_clay_aggregate

    Heat-expanded lightweight pebbles. Lightweight expanded clay aggregate (LECA) or expanded clay (exclay) is a lightweight aggregate made by heating clay to around 1,200 °C (2,190 °F) in a rotary kiln.