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In chemistry, the letter H as symbol of enthalpy sometimes is said to be a Greek eta, but since enthalpy comes from ἐνθάλπος, which begins in a smooth breathing and epsilon, it is more likely a Latin H for 'heat'. In information theory the uppercase Greek letter Η is used to represent the concept of entropy of a discrete random variable.
Heta is a conventional name for the historical Greek alphabet letter Eta ... Jeffery (1961) uses the tack symbol also as a modern label for the abstract grapheme, ...
Sometimes, font variants of Greek letters are used as distinct symbols in mathematics, in particular for ε/ϵ and π/ϖ. The archaic letter digamma (Ϝ/ϝ/ϛ) is sometimes used. The Bayer designation naming scheme for stars typically uses the first Greek letter, α, for the brightest star in each constellation, and runs through the alphabet ...
The Greek alphabet has been used to write the Greek language since the late 9th or early 8th century BC. [2] [3] ... eta [hɛːta], [ɛːta] ... Greek symbols are ...
This is a list of letters of the Greek alphabet. The definition of a Greek letter for this list is a character encoded in the Unicode standard that a has script property of "Greek" and the general category of "Letter". An overview of the distribution of Greek letters is given in Greek script in Unicode.
The 2020 Atlantic hurricane season is off to a record-setting start, and at its current pace, the tropical storm count may outnumber the list of 21 names that are used to identify systems ...
The 2020 Atlantic hurricane season was so active that forecasters resorted to naming storms with letters from the Greek alphabet for only the second time in history. Turns out, it was the final ...
In addition, the red alphabet also introduced letters for the aspirates, Φ = /pʰ/ and Ψ = /kʰ/. Note that the use of Χ in the "red" set corresponds to the letter "X" in Latin, while it differs from the later standard Greek alphabet, where Χ stands for /kʰ/, and Ψ stands for /ps/. Only Φ for /pʰ/ is common to all non-green alphabets.