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The Greek alphabet has been used to write the Greek language since the late 9th or early 8th century BC. [2] [3] It was derived from the earlier Phoenician alphabet, [4] and is the earliest known alphabetic script to systematically write vowels as well as consonants. [5]
the fine-structure constant in physics [2] [3] the angle of attack of an aircraft; an alpha particle (He 2+) angular acceleration in physics [4] the linear thermal expansion coefficient; the thermal diffusivity [5] In organic chemistry the α-carbon is the backbone carbon next to the carbonyl carbon, most often for amino acids; right ascension ...
Iota subscripts in the word ᾠδῇ, ("ode", dative). The iota subscript is a diacritic mark in the Greek alphabet shaped like a small vertical stroke or miniature iota ι placed below the letter.
In its archaic form, θ was written as a cross within a circle (as in the Etruscan or ), and later, as a line or point in circle (or ).. Greek theta variant in cursive form.
Iota (/ aɪ ˈ oʊ t ə /; [1] uppercase Ι, lowercase ι; Greek: ιώτα) is the ninth letter of the Greek alphabet.It was derived from the Phoenician letter Yodh. [2] Letters that arose from this letter include the Latin I and J, the Cyrillic І (І, і), Yi (Ї, ї), and Je (Ј, ј), and iotated letters (e.g. Yu (Ю, ю)).
The American Library Association and Library of Congress romanization scheme employs its "Ancient or Medieval Greek" system for all works and authors up to the Fall of Constantinople in 1453, [3] although Byzantine Greek was pronounced distinctly and some have considered "Modern" Greek to have begun as early as the 12th century.
The Greek alphabet on a black-figure pottery vessel, with an archaic chickenfoot-shaped psi.. Psi / ˈ (p) s aɪ, ˈ (p) s iː / (P)SY, (P)SEE [1] (uppercase Ψ, lowercase ψ or 𝛙; Greek: ψι psi) is the twenty-third and penultimate letter of the Greek alphabet and is associated with a numeric value of 700.
Schematic mid-sagittal section. Features of the voiceless retroflex fricative: Its manner of articulation is sibilant fricative, which means it is generally produced by channeling air flow along a groove in the back of the tongue up to the place of articulation, at which point it is focused against the sharp edge of the nearly clenched teeth, causing high-frequency turbulence.