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# The twenty-third letter of the [http://en.wiktionary.org/wiki/Classical_Greek Classical Greek] and [http://en.wiktionary.org/wiki/Modern_Greek Modern Greek], the twenty-forth letter of [http://en.wiktionary.org/wiki/Old_Greek Old Greek] and [http://en.wiktionary.org/wiki/Ancient_Greek Ancient Greek] Alphabet.
#In mathematics (Ѱ, ѱ) is the angle between the tangent and the x-axis in the intrinsic coordinates system.
# The lower-case letter ψ is used as the symbol for the wave function in quantum mechanics.
# In high-energy physics, Ψ refers to a meson also called the J/Ψ particle
# Psi is also a popular [[Jabber]] client.
# Psi was also a character on the popular game and television series, Pokémon.
# The Italian Socialist Party (Partito Socialista Italiano)
# Pounds per square inch (PSI).
# It has come to be a symbol for (para)-psychology-related topics, and has also been used as a shorthand for supposed psychic or [http://en.wikipedia.org/wiki/Psionic psionic] abilities or powers.
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Revision as of 17:24, 28 June 2005
Ψ
- The twenty-third letter of the Classical Greek and Modern Greek, the twenty-forth letter of Old Greek and Ancient Greek Alphabet.
- In mathematics (Ѱ, ѱ) is the angle between the tangent and the x-axis in the intrinsic coordinates system.
- The lower-case letter ψ is used as the symbol for the wave function in quantum mechanics.
- In high-energy physics, Ψ refers to a meson also called the J/Ψ particle
- Psi is also a popular Jabber client.
- Psi was also a character on the popular game and television series, Pokémon.
- The Italian Socialist Party (Partito Socialista Italiano)
- Pounds per square inch (PSI).
- It has come to be a symbol for (para)-psychology-related topics, and has also been used as a shorthand for supposed psychic or psionic abilities or powers.