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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 ...
Beta (UK: / ˈ b iː t ə /, US: / ˈ b eɪ t ə /; uppercase Β, lowercase β, or cursive ϐ; Ancient Greek: βῆτα, romanized: bē̂ta or Greek: βήτα, romanized: víta) is the second letter of the Greek alphabet.
Ñ or ñ (Spanish: eñe, ⓘ), is a letter of the modern Latin alphabet, formed by placing a tilde (also referred to as a virgulilla in Spanish, in order to differentiate it from other diacritics, which are also called tildes) on top of an upper- or lower-case n . [1]
The grammarians Dionysius Thrax [2] and Dionysius of Halicarnassus class ζ with the "double" (διπλᾶ) letters ψ, ξ and analyse it as σ + δ. Contra: The Roman grammarian Verrius Flaccus believed in the opposite sequence, δ + σ (in Velius Longus , De orthogr . 51), and Aristotle says that it was a matter of dispute ( Metaph . 993a ...
Rho (/ ˈ r oʊ /; uppercase Ρ, lowercase ρ or ϱ; Greek: ρο or ρω) is the seventeenth letter of the Greek alphabet.In the system of Greek numerals it has a value of 100. It is derived from Phoenician letter res.
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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.