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  2. Sic - Wikipedia

    en.wikipedia.org/wiki/Sic

    Occasionally a writer places [sic] after their own words, to indicate that the language has been chosen deliberately for special effect, especially where the writer's ironic meaning may otherwise be unclear. [14] Bryan A. Garner dubbed this use of sic "ironic", providing the following example from Fred Rodell 's 1955 book Nine Men: [2]

  3. List of chemical elements - Wikipedia

    en.wikipedia.org/wiki/List_of_chemical_elements

    A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z). [ 1 ] The definitive visualisation of all 118 elements is the periodic table of the elements , whose history along the principles of the periodic law was one of the founding ...

  4. List of proofreader's marks - Wikipedia

    en.wikipedia.org/wiki/List_of_proofreader's_marks

    This article is a list of standard proofreader's marks used to indicate and correct problems in a text. Marks come in two varieties, abbreviations and abstract symbols. Marks come in two varieties, abbreviations and abstract symbols.

  5. Polymorphs of silicon carbide - Wikipedia

    en.wikipedia.org/wiki/Polymorphs_of_silicon_carbide

    The 2H-SiC structure is equivalent to that of wurtzite and is composed of only elements A and B stacked as ABABAB. The 4H-SiC unit cell is two times longer, and the second half is twisted compared to 2H-SiC, resulting in ABCB stacking. The 6H-SiC cell is three times longer than that of 2H, and the stacking sequence is ABCACB.

  6. List of semiconductor materials - Wikipedia

    en.wikipedia.org/wiki/List_of_semiconductor...

    A compound semiconductor is a semiconductor compound composed of chemical elements of at least two different species. These semiconductors form for example in periodic table groups 13–15 (old groups III–V), for example of elements from the Boron group (old group III, boron, aluminium, gallium, indium) and from group 15 (old group V, nitrogen, phosphorus, arsenic, antimony, bismuth).

  7. Table of Lie groups - Wikipedia

    en.wikipedia.org/wiki/Table_of_Lie_groups

    the real numbers, the Lie bracket is zero 1 R n: the Lie bracket is zero n: R 3: the Lie bracket is the cross product: Yes Yes 3: H: quaternions, with Lie bracket the commutator 4 Im(H) quaternions with zero real part, with Lie bracket the commutator; isomorphic to real 3-vectors, with Lie bracket the cross product; also isomorphic to su(2) and ...

  8. Silicon carbide - Wikipedia

    en.wikipedia.org/wiki/Silicon_carbide

    Gate drive: SiC devices often require gate drive voltage levels that are different from their silicon counterparts and may be even unsymmetric, for example, +20 V and −5 V. [64] Packaging: SiC chips may have a higher power density than silicon power devices and are able to handle higher temperatures exceeding the silicon limit of 150 °C.

  9. List of glossing abbreviations - Wikipedia

    en.wikipedia.org/wiki/List_of_glossing_abbreviations

    For example, NPST non-past is not listed, as it is composable from N-non-+ PST past. This convention is grounded in the Leipzig Glossing Rules. [2] Some authors use a lower-case n, for example n H for 'non-human'. [16] Some sources are moving from classical lative (LAT, -L) terminology to 'directional' (DIR), with concommitant changes in the ...