PT  - JOURNAL ARTICLE
AU  - TRUBENOVÁ, Jaroslava
TI  - HISTORY OF LUDOLPH'S NUMBER
DP  - 2014 Jul 1
TA  - Trends in education
PG  - 415--419
VI  - 7
IP  - 1
IS  - 18058949
AB  - Mathematics provides natural and technical sciences with many constants (e.g. Euler's number, circular constant, the golden ratio constant, and many others). The use of these constants in natural and technical sciences is obvious and quite common. Knowing the history of these constants, in particular stimuli and impulses that led to the introduction of constants is also very interesting and useful from pedagogical and didactic aspects. The article provides an insight into the history of the number π at several most interesting stages of the introduction, definition and determination of this number: from the early indications of awareness of relationships between different variables of a circle: "....the larger the circle is across, the longer is around.... ", through the knowledge of the number π in Babylonian and Egyptian mathematics, mathematics of ancient China, ancient Rome and Greece, to the modern attempts in most accurate calculations of the value of π.