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  2. Hexaferrum - Wikipedia

    en.wikipedia.org/wiki/Hexaferrum

    Hexaferrum and epsilon iron (ε-Fe) are synonyms for the hexagonal close-packed (HCP) phase of iron that is stable only at extremely high pressure.. A 1964 study at the University of Rochester mixed 99.8% pure α-iron powder with sodium chloride, and pressed a 0.5-mm diameter pellet between the flat faces of two diamond anvils.

  3. Free body diagram - Wikipedia

    en.wikipedia.org/wiki/Free_body_diagram

    A free body diagram is not a scaled drawing, it is a diagram. The symbols used in a free body diagram depends upon how a body is modeled. [6] Free body diagrams consist of: A simplified version of the body (often a dot or a box) Forces shown as straight arrows pointing in the direction they act on the body

  4. Balanced-arm lamp - Wikipedia

    en.wikipedia.org/wiki/Balanced-arm_lamp

    Springs can be located on the mechanical equivalent of the forearm or the upper arm, or both, as well as nearer to the base. Some lamps use tension springs, and others use compression springs. The adjacent image shows (left to right) a compression spring at rest, then under load, followed by a tension spring at rest, and then under load.

  5. Iron(III) oxide - Wikipedia

    en.wikipedia.org/wiki/Iron(III)_oxide

    Fe 2 O 3 + 3 CO → 2 Fe + 3 CO 2. Another redox reaction is the extremely exothermic thermite reaction with aluminium. [17] 2 Al + Fe 2 O 3 → 2 Fe + Al 2 O 3. This process is used to weld thick metals such as rails of train tracks by using a ceramic container to funnel the molten iron in between two sections of rail.

  6. File:Iron carbon phase diagram.svg - Wikipedia

    en.wikipedia.org/wiki/File:Iron_carbon_phase...

    Steel is between 0 and 2.06 mass percent of carbon. Cast iron is between 2.06 and 6.67%. Black lines indicate the metastable Fe/Fe3Cphase, red is the stable Fe/Carbon phase This diagram is for illustrative purposes only, and is not thermodynamically accurate.

  7. File:Chromaticity diagram full.pdf - Wikipedia

    en.wikipedia.org/wiki/File:Chromaticity_diagram...

    Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts

  8. File:Milne-Edwards diagram.pdf - Wikipedia

    en.wikipedia.org/wiki/File:Milne-Edwards_diagram.pdf

    This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file.

  9. Functional block diagram - Wikipedia

    en.wikipedia.org/wiki/Functional_block_diagram

    The functional block diagram can picture: [1] functions of a system pictured by blocks; input and output elements of a block pictured with lines; the relationships between the functions, and; the functional sequences and paths for matter and or signals [2] The block diagram can use additional schematic symbols to show particular properties.