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  2. Heavy metals - Wikipedia

    en.wikipedia.org/wiki/Heavy_metal_(elements)

    This table shows the number of heavy metal criteria met by each metal, out of the ten criteria listed in this section i.e. two based on density, three on atomic weight, two on atomic number, and three on chemical behaviour. [n 1] It illustrates the lack of agreement surrounding the concept, with the possible exception of mercury, lead and bismuth.

  3. Metal - Wikipedia

    en.wikipedia.org/wiki/Metal

    A heavy metal is any relatively dense metal, either single element or multielement. [46] Magnesium, aluminium and titanium alloys are light metals of significant commercial importance. [47] Their densities of 1.7, 2.7 and 4.5 g/cm 3 range from 19 to 56% of the densities of other structural metals, [48] such as iron (7.9) and copper (8.9) and ...

  4. Osmium - Wikipedia

    en.wikipedia.org/wiki/Osmium

    Osmium is a hard, brittle, blue-gray metal, and the densest stable element—about twice as dense as lead. The density of osmium is slightly greater than that of iridium ; the two are so similar (22.587 versus 22.562 g/cm 3 at 20 °C) that each was at one time considered to be the densest element.

  5. Why should you keep your key fob in a metal (coffee) can? To ...

    www.aol.com/why-keep-key-fob-metal-120333440.html

    The single most important tip is that car consumers should always store their key fob in a metal container or a metal wire bag often called a Faraday cage that prevents the key fob from ...

  6. Zamak - Wikipedia

    en.wikipedia.org/wiki/Zamak

    ZAMAK (or Zamac, formerly trademarked as MAZAK [1]) is an eclectic family of alloys with a base metal of zinc and alloying elements of aluminium, magnesium, and copper. Zamak alloys are part of the zinc aluminium alloy family; they are distinguished from the other ZA alloys because of their constant 4% aluminium composition.

  7. Glossary of automotive terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_automotive_terms

    Also gas pedal. A throttle in the form of a foot-operated pedal, or sometimes a hand-operated lever or paddle, by which the flow of fuel to the engine (and thereby the engine speed) is controlled, with depression of the pedal causing the vehicle to accelerate. admission stroke See induction stroke. aftermarket air brake 1. A type of brake in which the force that actuates the brake mechanism is ...