1) paraboloit

In mathematics , a **paraboloid** is a quadric surface of special kind. There are two kinds of **paraboloids**: elliptic and hyperbolic.

**Kaynak:** Paraboloid

In the theory of quadratic form s, the parabola is the graph of the quadratic form x^2 (or other scalings), while the elliptic **paraboloid**

**Kaynak:** Parabola

A parabolic (or **paraboloid** or paraboloidal) reflector (or dish or mirror) is a reflective surface used to collect or project energy such

**Kaynak:** Parabolic reflector

Flamm's **paraboloid** : Image:Flamm. jpg | A plot of Flamm's **paraboloid**. It should not be confused with the unrelated concept of a gravity well .

**Kaynak:** Schwarzschild metric

A rotating furnace is a device for making solid objects which have concave surfaces that are segments of axially symmetrical **paraboloid** s

**Kaynak:** Rotating furnace

Golden Bay is a shallow, **paraboloid** shaped bay at the northwest end of New Zealand 's South Island . An arm of the Tasman Sea , the bay

**Kaynak:** Golden Bay

The 4C Array is a cylindrical **paraboloid** radio telescope at the Mullard Radio Astronomy Observatory . It is similar in design to the

**Kaynak:** 4C Array

Isaac Newton noted that the free surface of a rotating liquid forms a circular **paraboloid** and can therefore be used as a telescope, but

**Kaynak:** Liquid mirror telescope

See also: **Paraboloid** / Hyperbolic **paraboloid** Hyperboloid structure Ruled surface de Sitter space Vladimir Shukhov References : Wilhelm

**Kaynak:** Hyperboloid

The hyperbolic **paraboloid** form has been used for roofs at various times since it is easily constructed from straight sections of lumber,

**Kaynak:** Saddle roof

This configuration utilizes a two-axis feed flat mirror to reflect starlight into a fixed **paraboloid** of revolution (paraboloidal) mirror

**Kaynak:** Pfund telescope

family of equations that led to new structural and constructional systems, known as hyperboloids of revolution and hyperbolic **paraboloid** s.

**Kaynak:** Hyperboloid structure

The hyperbolic **paraboloid** and the hyperboloid of one sheet are doubly ruled surfaces. The plane is the only surface which contains three

**Kaynak:** Ruled surface

Classical examples of two-dimensional saddle surfaces in the Euclidean space are second order surfaces, the hyperbolic **paraboloid** z x^2-

**Kaynak:** Saddle surface

This pattern will be achieved by a truncated **paraboloid** reflector or a circular **paraboloid** reflector. Since the reflector is narrow in

**Kaynak:** Fan-beam antenna

Its shell roof is in the shape of a hyperbolic **paraboloid**, and is constructed of three thin skins of timber laid in different directions,

**Kaynak:** Church Army Chapel, Blackheath

Hyperbolic **paraboloid** s, such as saddle roof s. Hyperboloid of one sheet , such as cooling tower s. Notable projects : The world's first

**Kaynak:** List of hyperboloid structures

The curvature is actually that of an elliptic **paraboloid** with a
e b. If the shape were that of a toroid , the mirror would exhibit

**Kaynak:** Toroidal reflector

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