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  2. Omega - Wikipedia

    en.wikipedia.org/wiki/Omega

    The symbol for the highest power level of a PSI attack in the Mother/EarthBound games; A symbol used by U.S. citizens in the 1960s & 1970s to denote resistance to the U.S. war in Viet Nam. Adapted from the SI unit for electrical resistance. [10] It's used along with Alpha in the Alpha and Omega, a Christian symbol.

  3. List of symbols - Wikipedia

    en.wikipedia.org/wiki/List_of_symbols

    Recycling symbol. Recycling codes; Japanese recycling symbols; Green Dot (symbol) Laundry symbol; Period-after-opening symbol (on cosmetics as 6M, 12M, 18M, etc.) U+2602 ☂ UMBRELLA - keep dry; U+2614 ☔ UMBRELLA WITH RAIN DROPS - keep dry; Japanese postal mark ℮, the European estimated sign U+212E; Inventory tracking symbols Barcode such ...

  4. GHS hazard pictograms - Wikipedia

    en.wikipedia.org/wiki/GHS_hazard_pictograms

    Alternative sign. Division 2.1 Non-flammable non-toxic gases – Gases which: are asphyxiant – gases which dilute or replace the oxygen normally in the atmosphere; or; are oxidizing – gases which may, generally by providing oxygen, cause or contribute to the combustion of other material more than air does; or; do not come under the other ...

  5. Saint symbolism: Saints (A–H) - Wikipedia

    en.wikipedia.org/wiki/Saint_symbolism:_Saints_(A...

    Each saint is said to have led an exemplary life and symbols have been used to tell these stories throughout the history of the Church. [2] A number of Christian saints are traditionally represented by a symbol or iconic motif associated with their life, termed an attribute or emblem , in order to identify them.

  6. Standard deviation - Wikipedia

    en.wikipedia.org/wiki/Standard_deviation

    Suppose that the entire population of interest is eight students in a particular class. For a finite set of numbers, the population standard deviation is found by taking the square root of the average of the squared deviations of the values subtracted from their average value.

  7. Emblems of the International Red Cross and Red Crescent ...

    en.wikipedia.org/wiki/Emblems_of_the...

    The Red Cross symbol. The Red Cross on white background was the original protection symbol declared at the 1864 Geneva Convention. The ideas to introduce a uniform and neutral protection symbol as well as its specific design originally came from Dr. Louis Appia, a Swiss surgeon, and Swiss General Henri Dufour, founding members of the International Committee.

  8. e (mathematical constant) - Wikipedia

    en.wikipedia.org/wiki/E_(mathematical_constant)

    The first symbol used for this constant was the letter b by Gottfried Leibniz in letters to Christiaan Huygens in 1690 and 1691. [13] Leonhard Euler started to use the letter e for the constant in 1727 or 1728, in an unpublished paper on explosive forces in cannons, [14] and in a letter to Christian Goldbach on 25 November 1731.

  9. Military aircraft insignia - Wikipedia

    en.wikipedia.org/wiki/Military_aircraft_insignia

    Military aircraft insignia are insignia applied to military aircraft to visually identify the nation or branch of military service to which the aircraft belong. Many insignia are in the form of a circular roundel or modified roundel; other shapes such as stars, crosses, squares, or triangles are also used.