The number π (pi) is a mathematical constant, approximately equal to 3.14159, that is the ratio of a circle's circumference to its diameter. It is an irrational number, meaning that it cannot be expressed exactly as a ratio of two integers, though it is sometimes approximated as .mw- parser-output .sfrac{white-space:nowrap}.mw-parser-output .sfrac.tion ,.mw-parser-output .sfrac .tion{display:inline-block;vertical- align:-0.5em;font-size:85%;text-align:center}.mw-parser-output .sfrac .num{display:block;line-height:1em;margin:0.0em 0.1em;border-bottom:1px solid}.mw-parser-output .sfrac .den{display:block;line- height:1em;margin:0.1em 0.1em}.mw-parser-output .sr- only{border:0;clip:rect(0,0,0,0);clip-path:polygon(0px 0px,0px 0px,0px 0 px);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;w idth:1px}22/7. Its decimal representation never ends, nor does it enter a permanently repeating pattern. The digits of π appear to be evenly distributed, but no proof of this conjecture has been found. It appears in many formulae in mathematics and physics, and for thousands of years mathematicians have computed its value with increasing accuracy. Since the late 20th century, mathematicians and computer scientists have extended the decimal representation of π to many trillions of digits. Many equations from trigonometry and geometry rely on π, especially those concerning circles and spheres. A transcendental number, π is one of the most widely known mathematical constants. (Full article...).
Read more: https://en.wikipedia.org/wiki/Pi
_______________________________ Today's selected anniversaries:
1593:
Japanese invasions of Korea: A force of 3,000 Korean soldiers successfully defended Haengju Fortress against 30,000 Japanese invaders. https://en.wikipedia.org/wiki/Battle_of_Haengju
1885:
The Mikado, Gilbert and Sullivan's most frequently performed Savoy opera, debuted at the Savoy Theatre in London. https://en.wikipedia.org/wiki/The_Mikado
1945:
The Royal Air Force first used the Grand Slam, a 22,000 lb (10,000 kg) earthquake bomb, on a strategic railway viaduct in Bielefeld, Germany. https://en.wikipedia.org/wiki/Grand_Slam_%28bomb%29
1991:
Escondida, one of the most productive copper mines in the world, was officially inaugurated. https://en.wikipedia.org/wiki/Escondida
_____________________________ Wiktionary's word of the day:
transcendental: 1. Synonym of transcendent (“surpassing usual limits; excelling; extraordinary”). 2. (philosophy) 3. In the philosophy of Aristotle (384–322 B.C.E.): synonym of transcendent (“transcending or extending beyond a single category”); also, synonym of metaphysical (“of or relating to the basic structure of reality”). 4. In the philosophy of Immanuel Kant (1724–1804) or similar philosophies: concerned with the a priori or intuitive basis of knowledge, independent of experience. 5. In the philosophy associated with Ralph Waldo Emerson (1803–1882): of or relating to transcendentalism (“a philosophy which stresses intuition and spirituality”). 6. (by extension) 7. Beyond one's ordinary experience; extraordinary. 8. Existing in the imagination; abstract, conceptual. 9. Mystical, superhuman, supernatural. 10. (mathematics) 11. (algebra, field theory) Of an element of an extension field: not algebraic, that is, not the root of any polynomial that has positive degree and rational coefficients; also, of an extension field: that contains elements which are not algebraic. 12. (number theory) Of a function or number: not algebraic. 13. A thing which is transcendental (all adjective senses). 14. (Christian theology; metaphysics, philosophy (specifically Platonism); chiefly in the plural) Any one of the three transcendental properties of being—beauty, goodness, and truth—which are respectively the ideals of art, religion, and science, and thus the principal subjects of the study of aesthetics, ethics, and logic. 15. (mathematics) An element of an extension field, an extension field, a function, or a number which is not algebraic. 16. (obsolete) Synonym of transcendentalist (“one who believes in transcendentalism; a philosopher who asserts that true knowledge is obtained by faculties of the mind that transcend sensory experience”). 17. About Word of the Day 18. Nominate a word 19. Leave feedback https://en.wiktionary.org/wiki/transcendental
___________________________ Wikiquote quote of the day:
They had no vision amazing Of the goodly house they are raising; They had no divine foreshowing Of the land to which they are going: But on one man's soul it hath broken, A light that doth not depart; And his look, or a word he hath spoken, Wrought flame in another man's heart. --Arthur O'Shaughnessy https://en.wikiquote.org/wiki/Arthur_O%27Shaughnessy