Chi
Chi |
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pronunciation | |||||||||||||||||||||||
antique | [ kʰ ] | ||||||||||||||||||||||
modern | [ ç, x ] | ||||||||||||||||||||||
Equivalents | |||||||||||||||||||||||
Latin | CH ch | ||||||||||||||||||||||
Cyrillic | Хх | ||||||||||||||||||||||
Hebrew | ח | ||||||||||||||||||||||
Arabic | ﺥ | ||||||||||||||||||||||
Phoenician | ? | ||||||||||||||||||||||
transcription | |||||||||||||||||||||||
From the ancient world | ch | ||||||||||||||||||||||
From the modern | ch | ||||||||||||||||||||||
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The chi ( Greek neuter Χῖ , Majuskel Χ, minuscule χ, standard pronunciation in the naming of the letter: [çi:] ) is the 22nd letter of the Greek alphabet and has after the Milesian system the numerical value of the 600th
In ancient times, this letter denoted an aspirated, voiceless velar plosive [kʱǐː̂] , which in later times was either [ç] ( I-sound ) or [x] ( oh-sound ). The pronunciation in modern Greek is either [ç] before e- and i-sounds, or [x] before a-, o-, u-sounds and before consonants. The pronunciation of school Greek is similar in Germany. Today's pronunciation [k] for Chi in some foreign words from Greek such as B. Chaos, choir, Christ , comes closer to the ancient Greek pronunciation than that usually taught in schools.
use
- in stochastics for a probability distribution, see chi-square distribution or for the correspondingly distributed test variable, see chi-square test
- in chemistry a (non-standard) formula symbol for the amount of substance
- in set theory the indicator function
- in linear algebra for the characteristic polynomial
- In physics, material property of being polarized or magnetized in an external electrical ( electrical susceptibility ) or magnetic ( magnetic susceptibility ) field
- Chi phase , metallic phase
- in the International Phonetic Alphabet , the small acts [ χ ] identifying the voiceless uvular fricative
- When calculating machine elements , the related stress gradient (taking into account the support effect of elastically stressed near areas of stress peaks in the component, for example at a notch)
- in the graph coloring for the chromatic number and the chromatic index
- as German spelling for Qi as a term for life energy, "fluid" in traditional Chinese medicine (TCM)
- in flight dynamics as orbit azimuth
- as a symbol for Jesus Christ : The Greek X is the first letter of the name Χριστός and also symbolizes the cross.
See also
Web links
Wiktionary: Chi - explanations of meanings, word origins, synonyms, translations