# Quick Answer: What Does This Symbol Mean Φ?

## What is Phi face?

First, Dr.

Schmid measures the length and width of the face.

Then, she divides the length by the width.

The ideal result—as defined by the golden ratio—is roughly 1.6, which means a beautiful person’s face is about 1 1/2 times longer than it is wide..

## 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}.

## How do you read Phi?

The generally accepted pronunciation of phi is fi, like fly. Most people know phi as “fi,” to rhyme with fly, as its pronounced in “Phi Beta Kappa.” In Dan Brown’s best selling book “The Da Vinci Code,” however, phi is said to be pronounced fe, like fee.

## Why is Phi called the golden ratio?

Ancient Greek mathematicians first studied what we now call the golden ratio, because of its frequent appearance in geometry; the division of a line into “extreme and mean ratio” (the golden section) is important in the geometry of regular pentagrams and pentagons.

## What does 1.618 mean?

Alternative Titles: 1.618, divine proportion, golden mean, golden section. Golden ratio, also known as the golden section, golden mean, or divine proportion, in mathematics, the irrational number (1 + Square root of√5)/2, often denoted by the Greek letter ϕ or τ, which is approximately equal to 1.618.

## 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 “∅”, and the diameter symbol ⌀, the slash of a slashed zero usually does not extend past the ellipse in most typographic designs.

## What is angle θ?

The conventional way to define the trig functions is to start with an acute angle that is an angle with measure \theta between 0 and 90 degrees. You then draw a right triangle having one angle with measure \theta degrees and label the three sides. … You can check that the two definitions of the tangent are equivalent.

## What does θ mean in trigonometry?

In trig functions, theta is the input, and the output is the ratio of the sides of a triangle. If you’re given the ratio of the sides and need to find an angle, you must use the inverse trig function: Here’s what an inverse trig function looks like in action.

## What does ψ mean in biology?

Water potentialDefinition. noun. The measure of the relative tendency of water to move from one area to another, and is commonly represented by the Greek letter Ψ (Psi).

## What is the trident symbol called?

PsiPsi /ˈsaɪ/ (uppercase Ψ, lowercase ψ; Greek: ψι psi [ˈpsi]) is the 23rd letter of the Greek alphabet and has a numeric value of 700. In both Classical and Modern Greek, the letter indicates the combination /ps/ (as in English word “lapse”).

## What is this symbol φ?

Phi SymbolPhi (uppercase Φ, lowercase φ) is the 21st letter of the Modern Greek alphabet. In the Greek number system, it was taken as the symbol of 500. In math, the lowercase letter phi (φ) is used to indicate the golden ratio.

## What is this symbol θ?

The Greek letter theta θ is used in mathematics as a variable usually associated with a measured angle. In plain language, this represents the cosine function which takes in one argument represented by the variable θ. …

## Does Theta mean 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 is the symbol of Chi?

listen) (uppercase Χ, lowercase χ; Greek: χῖ) is the 22nd letter of the Greek alphabet.

## Why is phi so important?

PHI is important to individuals and valuable to hackers which makes it vital for organizations to protect. HIPAA lays out all the requirements and safeguards that should be put in place so that each person’s identifiable health information is kept secure from cyber criminals.

## How do I type Ø?

ø = Hold down the Control and Shift keys and type a / (slash), release the keys, and type an o. Ø = Hold down the Control and Shift keys and type a / (slash), release the keys, hold down the Shift key and type an O.

## How do you find Phi?

Phi is most often calculated using by taking the square root of 5 plus 1 and divided the sum by 2:√5 + 1.BC = √5.DE = 1.BE = DC = (√5-1)/2+1 = (√5+1)/2 = 1.618 … = Phi.BD = EC = (√5-1)/2 = 0.618… = phi.More items…•

## What does φ mean in math?

Golden Ratio φφ The golden ratio (symbol is the Greek letter “phi” shown at left) is a special number approximately equal to 1.618. It appears many times in geometry, art, architecture and other areas.

## What is this symbol ψ?

Psi (uppercase Ψ, lowercase ψ) is the 23rd letter of the Modern Greek alphabet. And the number 700 is represented by the symbol for this letter. The root of the letter psi is not clear. The lowercase letter psi (ψ) indicates the wave function in quantum mechanics and electric flux in electrical engineering.

## What is Ø in engineering?

In engineering drawings that symbol is used to denote diameter of circles in whatever the length unit of the drawing is (typically inches or mm) Form Wikipedia: Diameter symbol[edit ] http://en.wikipedia.org/wiki/File:Technical_Drawing_Hole_01.png. Sign ⌀ in a technical drawing.

## What does Phi look like?

Phi ( Φ = 1.618033988749895… ), most often pronounced fi like “fly,” is simply an irrational number like pi ( p = 3.14159265358979… ), but one with many unusual mathematical properties.