## Helix |

A **helix** (**helixes** or **helices** (*axis*. Examples of helices are ^{[1]} Helices are important in *helix* comes from the *ἕλιξ*, "twisted, curved".^{[2]}

Helices can be either right-handed or left-handed. With the line of sight along the helix's axis, if a clockwise screwing motion moves the helix away from the observer, then it is called a right-handed helix; if towards the observer, then it is a left-handed helix. Handedness (or

Most hardware

The **pitch** of a helix is the height of one complete helix turn, measured parallel to the axis of the helix.

A ** double helix** consists of two (typically

A **conic helix** may be defined as a

A **circular helix,** (i.e. one with constant radius) has constant band

A curve is called a **general helix** or **cylindrical helix**^{[4]} if its tangent makes a constant angle with a fixed line in space. A curve is a general helix if and only if the ratio of ^{[5]}

Geometric pitch is the distance an element of an airplane propeller would advance in one revolution if it were moving along a helix having an angle equal to that between the chord of the element and a plane perpendicular to the propeller axis.

A curve is called a **slant helix** if its principal normal makes a constant angle with a fixed line in space.^{[6]} It can be constructed by applying a transformation to the moving frame of a general helix.^{[7]}

Some curves found in nature consist of multiple helices of different handedness joined together by transitions known as

Other Languages

العربية: لولب (رياضيات)

български: Винтова линия

català: Hèlix (geometria)

čeština: Šroubovice

Cymraeg: Helics

dansk: Skruelinje

Deutsch: Helix

eesti: Heeliks

Ελληνικά: Έλικα

español: Hélice (geometría)

Esperanto: Helico (matematiko)

فارسی: پیچه

français: Hélice (géométrie)

galego: Hélice (xeometría)

한국어: 나선

Bahasa Indonesia: Heliks

íslenska: Gormferill

italiano: Elica (geometria)

עברית: סליל (צורה גאומטרית)

Jawa: Heliks

magyar: Csavarvonal

Nederlands: Helix (wiskunde)

日本語: 螺旋

norsk: Heliks

norsk nynorsk: Heliks

polski: Linia śrubowa

português: Hélice (geometria)

русский: Винтовая линия

Simple English: Helix

slovenščina: Vijačnica

српски / srpski: Хеликс

srpskohrvatski / српскохрватски: Heliks

suomi: Kierre

svenska: Helix

Türkçe: Sarmal

українська: Гвинтова лінія

粵語: 螺旋

中文: 螺旋