Psi (uppercase/lowercase Ψ ψ) is the 23rd letter of the Greek alphabet. It is used to represent the "ps" sound in Ancient and Modern Greek. In the system of Greek numerals, it has a value of 700.
Pounds or pound force per square inch (psi, lb/in², pfsi or lbf/in²) is a widely used British and American unit of measure for pressure.
Psi /ˈ(p)saɪ, ˈ(p)siː/ (uppercase Ψ, lowercase ψ or 𝛙; Greek: ψι psi [ˈpsi]) is the twenty-third and penultimate letter of the Greek alphabet and is associated with a numeric value of 700. In both Classical and Modern Greek, the letter indicates the combination /ps/ (as in English word "lapse").
Psi is the 23rd letter in the Modern Greek alphabet. Psi is also the first letter in the Greek word for psychology: Ψυχολογία. The root word ψυχή ('psichy' or psyche), means “life”, “soul”, and “heart” in Greek. The origins of psychology can be traced back to the Ancient Greeks along with the Romans.
The symbol for psychology represents the penultimate letter of the Greek alphabet, psi, which is also the first letter of the Greek word psuche, meaning mind or soul, from which the term psyche arose; which in turn gave us the name of the discipline psychology which is most commonly defined as study of the mind.
Φ φ phi, pronounced like the p in pot (an aspirated p) originally, later like the f in foot. Χ χ chi, pronounced like the k in kill (an aspirated k) originally, later like the ch in loch. Ψ ψ psi, pronounced like the ps in lapse.
Ψ | greek capital letter psi | Times New Roman, Regular @ Graphemica.
The letters of the Greek alphabet are: alpha, beta, gamma, delta, epsilon, zeta, eta, theta, iota, kappa, lambda, mu, nu1, xi, omicron, pi1, rho, sigma, tau, upsilon, phi, chi1, psi1, omega.
Lambda is the 11th letter of the Greek alphabet.
Yn (Ꙟ ꙟ) is an archaic Cyrillic letter. It looks like the Cyrillic letter Psi (Ѱ ѱ) with its upper half turned upside down, but the letter mostly looks like an arrow pointing vertically up (↑). It was used in the Romanian Cyrillic alphabet, where it represented the sounds [ɨn], [ɨm], and [ɨ] at the beginning of words.
The pound per square inch or, more accurately, pound-force per square inch (symbol: lbf/in2; abbreviation: psi) is a unit of pressure or of stress based on avoirdupois units. It is the pressure resulting from a force of one pound-force applied to an area of one square inch.
The National Environment Agency (NEA) measures haze levels through a system called the Pollutant Standards Index (PSI). PSI is computed based on a 24-hour reading of the concentration levels of pollutants.
Here are a few key differences between PSI and PSIG:
PSI is a unit of pressure that can be used to measure gauge pressure, absolute pressure, or vacuum pressure, while PSIG specifically refers to gauge pressure. PSI is a unit of pressure that can be used in both the US and the UK, while PSIG is mostly used in the US.
Pseudouridine (abbreviated by the Greek letter psi- Ψ) is an isomer of the nucleoside uridine in which the uracil is attached via a carbon-carbon instead of a nitrogen-carbon glycosidic bond. (In this configuration, uracil is sometimes referred to as 'pseudouracil'.) Pseudouridine.
There are few surviving sources about the reign of Caligula, though he is described as a noble and moderate emperor during the first six months of his rule. After this, the sources focus upon his cruelty, sadism, extravagance, and sexual perversion, presenting him as an insane tyrant.
By analogy with waves such as those of sound, a wave function, designated by the Greek letter psi, Ψ, may be thought of as an expression for the amplitude of the particle wave (or de Broglie wave), although for such waves amplitude has no physical significance.
Greek Symbol for Life: Tau
Tau is a Greek symbol that means life, which looks like a modern-day T in the English alphabet. It is the 19th letter of the Greek alphabet. The eighth letter of the alphabet, theta, is a symbol of death.
The 24th and last letter of the Greek alphabet, Omega (Ω), essentially means the end of something, the last, the ultimate limit of a set, or the "Great End." Without getting into a lesson in Greek, Omega signifies a grand closure, like the conclusion of a large-scale event.
Lambda indicates the wavelength of any wave, especially in physics, electronic engineering, and mathematics. In evolutionary algorithms, λ indicates the number of offspring that would be generated from μ current population in each generation. The terms μ and λ are originated from Evolution strategy notation.
For example, the Greek letter psi, which features very prominently in quantum mechanics, can be pronounced with or without the p (see here for a post on Greek letters). On the other hand, according to wikipedia, the p in the name of the inventor of the Gangnam style, Psy, is silent.
As the final letter in the Greek alphabet, omega is often used to denote the last, the end, or the ultimate limit of a set, in contrast to alpha, the first letter of the Greek alphabet; see Alpha and Omega.
What Is Phi? Phi is an irrational mathematical constant, approximately 1.618.., and is often denoted by the Greek letter φ. Other commonly used names for Phi are: Golden Mean, Extreme and Mean Ratio, Divine Proportion and Golden Ratio.