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S vs Observable - What's the difference?

s | observable |

As a letter s

is the letter s with a.

As an adjective observable is

able to be observed.

As a noun observable is

(physics) any physical property that can be observed and measured directly and not derived from other properties.

s

Translingual

{{Basic Latin character info, previous=r, next=t, image= (wikipedia s)

Letter

  • The nineteenth letter of the .

    • Symbol

    (wikipedia) (mul-symbol)
  • voiceless alveolar fricative
  • Symbol for second , an SI unit of measurement of time.

    • See also

    (Latn-script) * * (esh) * (dze) * {{Letter , page=S , NATO=Sierra , Morse=ยทยทยท , Character=S , Braille=? }} Image:Latin S.png, Capital and lowercase versions of S , in normal and italic type Image:Fraktur letter S.png, Uppercase and lowercase S in Fraktur Symbols for SI units ----

    observable

    English

    Adjective

    (en adjective)
  • Able to be observed.
  • * The strange new star was at the edge of the observable universe
  • Deserving to be observed.
  • * Easter is an observable holiday

    • Noun

    (wikipedia observable) (en noun)
  • (physics) Any physical property that can be observed and measured directly and not derived from other properties
    • Temperature is an observable but entropy is derived.
    In quantum mechanics, observables''' correspond to Hermitian operators. Also, they act a lot like random variables. Taking their average one may recover something resembling a classical '''observable .
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