# BookRiff

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## What is the lemniscate equation?

Inverting the lemniscate in a circle centred at the origin and touching the lemniscate where it crosses the x-axis produces a rectangular hyperbola. The bipolar equation of the lemniscate is r r ′ = a 2 / 2 rr’ = a^{2}/2 rr′=a2/2.

What are Lemniscates used for?

The lemniscate, reduced in size to that of typographical characters, is commonly used as the symbol for infinity, or for a value that increases without limit.

### Is lemniscate an infinity?

, ∞, or ∞) is a mathematical symbol representing the concept of infinity. In algebraic geometry, the figure is called a lemniscate.

What is lemniscate curve?

The lemniscate, also called the lemniscate of Bernoulli, is a polar curve defined as the locus of points such that the the product of distances from two fixed points and (which can be considered a kind of foci with respect to multiplication instead of addition) is a constant .

## What is the meaning of lemniscate?

: a figure-eight shaped curve whose equation in polar coordinates is ρ2=a2 cos 2θ or ρ2=a2 sin 2θ

How do you translate Lemniscates?

In algebraic geometry, a lemniscate is any of several figure-eight or ∞-shaped curves. The word comes from the Latin “lēmniscātus” meaning “decorated with ribbons”, from the Greek λημνίσκος meaning “ribbons”, or which alternatively may refer to the wool from which the ribbons were made.

### How did the lemniscate of Bernoulli get its name?

In geometry, the lemniscate of Bernoulli is a plane curve defined from two given points F1 and F2, known as foci, at distance 2a from each other as the locus of points P so that PF1·PF2 = a2. The curve has a shape similar to the numeral 8 and to the ∞ symbol. Its name is from lemniscus, which is Latin for “pendant ribbon”.

How did the lemniscate curve get its name?

The curve has a shape similar to the numeral 8 and to the ∞ symbol. Its name is from lemniscatus, which is Latin for “decorated with hanging ribbons”. It is a special case of the Cassini oval and is a rational algebraic curve of degree 4.

## What was the shape of the Bernoulli curve?

Today, the Basel phone book lists many Bernoullis and family members are still on the faculty of the University. In 1694 James Bernoulli (left) published a curve in Acta Eruditorum that he described as being “shaped like a figure 8, or a knot, or bow of a ribbon.”

How to calculate the lemniscate of a hyperbola?

A lemniscate has the neat property that a normal (line at right angles) to the segment OP (where O is the origin and P is a point on the lemniscate) traces out the two arms of a hyperbola. x 2 − y 2 = 1. \\displaystyle {x}^ {2}- {y}^ {2}= {1}. x2 − y2 = 1. This is a simple applet.