logarithmic spiral
41number game — Introduction any of various puzzles and games that involve aspects of mathematics. Mathematical recreations comprise puzzles and games that vary from naive amusements to sophisticated problems, some of which have never been solved.… …
42Pedal curve — Geometric construction of the pedal of C with respect to P In the differential geometry of curves, a pedal curve is a curve derived by construction from a given curve (as is, for example, the involute). Let C be a given curve and P a fixed point… …
43Exponential function — The natural exponential function y = ex In mathematics, the exponential function is the function ex, where e is the number (approximately 2.718281828) such that the function ex is its own derivative …
44Sacred geometry — is geometry used in the design of sacred architecture and sacred art. The basic belief is that geometry and mathematical ratios, harmonics and proportion are also found in music, light, cosmology. This value system is seen as widespread even in… …
45Jacob Bernoulli — Infobox Scientist name = Jacob Bernoulli |200px image width = 200px caption = Jacob Bernoulli birth date = birth date|df=yes|1654|12|27 birth place = Basel, Switzerland death date = death date and age|df=yes|1705|8|16|1654|12|27 death place =… …
46Rhumb line — In navigation, a rhumb line (or loxodrome) is a line crossing all meridians at the same angle, i.e. a path of constant bearing. Unlike a great circle route (for which bearing is not constant), following a rhumb line requires turning the vehicle… …
47Conchospiral — In mathematics, a conchospiral is a three dimensional spiral. In cylindrical coordinates, it is described by the parametric equations: r = μta θ = t z = μtc. The projection of a conchospiral on the (r, θ) plane is a logarithmic spiral. External… …
48Equiangular — In geometry equiangular relates to having equal angles. In particular: *Equiangular polygon a polygon with equal angles. *The Logarithmic spiral or equiangular spiral a type of spiral. *Equiangular lines a set of lines where every pair of lines… …
49Spring-loaded camming device — A spring loaded camming device (also SLCD, cam or friend) is a piece of rock climbing or mountaineering protection equipment. It consists of three or four cams mounted on a common axle or two adjacent axles, so that pulling on the axle forces the …
50Scale invariance — In physics and mathematics, scale invariance is a feature of objects or laws that do not change if length scales (or energy scales) are multiplied by a common factor. The technical term for this transformation is a dilatation (also known as… …
