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  2. Metal spinning - Wikipedia

    en.wikipedia.org/wiki/Metal_spinning

    Metal spinning, also known as spin forming or spinning or metal turning most commonly, is a metalworking process by which a disc or tube of metal is rotated at high speed and formed into an axially symmetric part. [1]

  3. Potts model - Wikipedia

    en.wikipedia.org/wiki/Potts_model

    For example, for the standard ferromagnetic Potts model in , a phase transition exists for all real values , [7] with the critical point at = ⁡ (+). The phase transition is continuous (second order) for 1 ≤ q ≤ 4 {\displaystyle 1\leq q\leq 4} [ 8 ] and discontinuous (first order) for q > 4 {\displaystyle q>4} .

  4. Triality - Wikipedia

    en.wikipedia.org/wiki/Triality

    Of all simple Lie groups, Spin(8) has the most symmetrical Dynkin diagram, D 4. The diagram has four nodes with one node located at the center, and the other three attached symmetrically. The symmetry group of the diagram is the symmetric group S 3 which acts by permuting the three legs. This gives rise to an S 3 group

  5. Melt spinning - Wikipedia

    en.wikipedia.org/wiki/Melt_spinning

    For example, here is an article about the specific conditions that were found to work well for melt spinning Fe-B and Fe-Si-B alloys. In general, melt spinners will run with some variation in the following variables depending on the desired product.

  6. Aluminium - Wikipedia

    en.wikipedia.org/wiki/Aluminium

    Aluminium (or aluminum in North American English) is a chemical element; it has symbol Al and atomic number 13. Aluminium has a density lower than that of other common metals, about one-third that of steel. It has a great affinity towards oxygen, forming a protective layer of oxide on the surface when exposed to air.

  7. Spinel - Wikipedia

    en.wikipedia.org/wiki/Spinel

    Polyhedral representation of spinel MgAl 2 O 4. Spinel (/ s p ɪ ˈ n ɛ l, ˈ s p ɪ n əl / [7]) is the magnesium/aluminium member of the larger spinel group of minerals. It has the formula MgAl

  8. Spinor - Wikipedia

    en.wikipedia.org/wiki/Spinor

    The main example is the case that the real vector space V is a hermitian vector space (V, h), i.e., V is equipped with a complex structure J that is an orthogonal transformation with respect to the inner product g on V. Then splits in the ±i eigenspaces of J.

  9. Aluminum cycle - Wikipedia

    en.wikipedia.org/wiki/Aluminum_cycle

    The aluminum cycle is the biogeochemical cycle by which aluminum is moved through the environment by natural and anthropogenic processes. The biogeochemical cycle of aluminum is integral with silicon and phosphorus. For example, phosphates store aluminum that has been sedimented and aluminum is found in diatoms (made of silica). Aluminum has ...