lawpolt.blogg.se - Ksi psi greek letter

These characters are used only as mathematical symbols. In Biblical studies, as an abbreviation for the book of Psalms.The ordinal collapsing function and notation developed by Wilfried Buchholz.In building, to represent an adjustment to a U-value, accounting for thermal bridge effects.In circadian physiology, ψ represents the phase relationship between a zeitgeber and a biological rhythm.The letter psi is commonly used in physics to represent wave functions in quantum mechanics, such as in the Schrödinger equation and bra–ket notation: ⟨ ϕ | ψ ⟩. The classical Greek letter was adopted into the early Cyrillic alphabet as " Ѱ". However, it was abandoned after his death. Psi, or its Arcadian variant or was adopted in the Latin alphabet in the form of "Antisigma" (Ↄ, ↃC, or 𐌟) during the reign of Emperor Claudius as one of the three Claudian letters. The Western letter (expressing /kʰ/, later /x/) was adopted into the Old Italic alphabets, and its shape is also continued into the Algiz rune of the Elder Futhark. There were early graphical variants that omitted the stem ("chickenfoot-shaped psi" as: or ). In writing, the early letter appears in an angular shape ( ). It was derived from the Phoenician letter zayin. In the system of Greek numerals, it has a value of 7. It appears in the 7th century BC, expressing /ps/ in the Eastern alphabets, but /kʰ/ in the Western alphabets (the sound expressed by Χ in the Eastern alphabets). Zeta ( UK: / zit /, 1 US: / zet / uppercase, lowercase Ancient Greek:, Demotic Greek:, classical dz:ta or zd:ta zta Modern Greek : zita zta) is the sixth letter of the Greek alphabet. It may or may not derive from the Phoenician alphabet.

In both Classical and Modern Greek, the letter indicates the combination /ps/ (as in English word " lapse").įor Greek loanwords in Latin and modern languages with Latin alphabets, psi is usually transliterated as "ps". Psi / ˈ( p) s aɪ, ˈ( p) s iː/ (uppercase Ψ, lowercase ψ or 𝛙 Greek: ψι psi ) is the 23rd letter of the Greek alphabet and is associated with a numeric value of 700.

The lower case letter psi ( ψι), the 23rd letter of the modern Greek alphabet.The Greek alphabet on a black-figure pottery vessel, with an archaic chickenfoot-shaped psi.

It represented the consonant cluster /ps/ in the Eastern Greek alphabet and the voiceless aspirated velar plosive /kʰ/ in the Western Greek alphabet (compare Etruscan 𐌙 khe).

Lower-case psi ( ψεῖ), the 23rd letter of the ancient Greek alphabet.

Otherwise, the distinction may be made by providing the arguments.ĭerived from its majuscule counterpart Ψ. ( quantum physics ) : Some texts use Ψ (uppercase) for the actual wavefunction that appears in the time-dependent Schrödinger equation, and ψ ( =Ψe iEt/ħ) (lowercase) for the time-independent spatial wave function that may exist for stationary states (and which then appears in the time-independent Schrödinger equation), but this distinction is not always observed.

( phonetics, dated ) a voiceless retroflex click, IPA ⟨𝼊⟩.

( Christianity ) The Psalms ( a book in the Bible ).

( astrology, italic ) asteroid (16) Psyche (a stylized 𝜓).

( physics, biochemistry ) Water potential in cells.

( electrical engineering ) Electric flux.

Ψ Doke's obsolete symbol for a voiced retroflex click