# Quick Answer: What Does This Symbol Mean Φ?

## What is this symbol θ?

Theta (θ ) is a symbol used to denote the unknown measure of an angle.

It is used mostly in displaying the trigonometric ratios of sine, cosine, and tangent..

## What does μ mean?

Micro-Micro- (Greek letter μ or legacy micro symbol µ) is a unit prefix in the metric system denoting a factor of 10−6 (one millionth). Confirmed in 1960, the prefix comes from the Greek μικρός (mikrós), meaning “small”. … It is the only SI prefix which uses a character not from the Latin alphabet.

## What does the symbol Δ mean?

Upper-case deltaUpper-case delta (Δ) often means “change” or “the change in” in mathematics.

## What does ø mean in sets?

An element of a set is an object directly contained within that set. For example, 1 ∈ {1, 2, 3} and Ø ∈ {Ø}, but 1 ∉ Ø and 1 ∉ {2, 3}. … Two sets are equal if they contain the same elements. For example, we have that {1, 2} = {2, 1} and that {Ø} = {Ø}.

## What is this symbol φ?

ComputingCharacterNameYour browserU+03A6GREEK CAPITAL LETTER PHIΦU+03C6GREEK SMALL LETTER PHIφU+03D5GREEK PHI SYMBOLϕ (ϕ)U+0278LATIN SMALL LETTER PHIɸ

## What does ψ mean in math?

The wave function’s symbol is the Greek letter psi, Ψ or ψ. The wave function Ψ is a mathematical expression. … The Schrödinger equation is an equation of quantum mechanics: calculated wave functions have discrete, allowed values for electrons bound in atoms and molecules; all other values are forbidden.

## What is Ø in engineering?

The symbol or variable for diameter, ⌀, is similar in size and design to ø , the Latin small letter o with stroke. In Unicode it is defined as U+2300⌀ diameter sign (HTML ⌀). … In most situations the letter ø is acceptable, which is unicode 0248 (hexadecimal 00F8).

## What’s a 0 with a slash?

The slashed zero is a representation of the number “0” (zero), with a slash through it. … Unlike in the Scandinavian vowel “Ø” and the “empty set” symbol “∅”, the slash of a slashed zero usually does not extend past the ellipse in most typographic designs.

## What is the Greek symbol for death?

In classical Athens, it was used as an abbreviation for the Greek θάνατος (thanatos, “death”) and as it vaguely resembles a human skull, theta was used as a warning symbol of death, in the same way that skull and crossbones are used in modern times.

## What does delta mean?

English Language Learners Definition of delta : the fourth letter of the Greek alphabet. : a piece of land shaped like a triangle that is formed when a river splits into smaller rivers before it flows into an ocean. US : an area of low land along the Mississippi River that is mainly in the state of Mississippi.

## What does the PSI symbol mean?

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.

## What are the 24 Greek letters?

These twenty-four letters (each in uppercase and lowercase forms) are: Α α, Β β, Γ γ, Δ δ, Ε ε, Ζ ζ, Η η, Θ θ, Ι ι, Κ κ, Λ λ, Μ μ, Ν ν, Ξ ξ, Ο ο, Π π, Ρ ρ, Σ σ/ς, Τ τ, Υ υ, Φ φ, Χ χ, Ψ ψ, and Ω ω….Greek alphabetGreece.Cyprus.European Union.

## What does the pitchfork symbol mean in math?

The symbol ∈ indicates set membership and means “is an element of” so that the statement x∈A means that x is an element of the set A.

## Is Ö the same as Ø?

In many languages, the letter “ö”, or the “o” modified with an umlaut, is used to denote the non-close front rounded vowels [ø] or [œ]. In languages without such vowels, the character is known as an “o with diaeresis” and denotes a syllable break, wherein its pronunciation remains an unmodified [o].