or symbol of the numeral 10
51IBM Selectric typewriter — The IBM Selectric typewriter (occasionally known as the IBM Golfball typewriter) is an influential electric typewriter design. It was introduced in 1961.Instead of a basket of pivoting typebars the Selectric had a pivoting type element… …
52Geomantic figures — The sixteen geomantic figures. The 16 geomantic figures are the primary symbols used in the art of divinatory geomancy. Each geomantic figure represents a certain state of the world or the mind, and can be interpreted in various ways based upon… …
53Ptolemy's table of chords — The table of chords, created by the astronomer and geometer Ptolemy in Egypt during the 2nd century AD, is a trigonometric table in Book I, chapter 11 of Ptolemy s Almagest,[1] a treatise on mathematical astronomy. It is essentially… …
54Rule 110 — The Rule 110 cellular automaton (often simply Rule 110) is a one dimensional two state cellular automaton with the following rule table:Interesting propertiesAround 2000, Matthew Cook verified a 1985 conjecture by Stephen Wolfram by proving that… …
55Roman abacus — The Romans developed the Roman hand abacus, a portable, but less capable, base 10 version of the previous Babylonian abacus. It was the first portable calculating device for engineers, merchants and presumably tax collectors. It greatly reduced… …
56Magic gopher — The magic gopher[1] is an interactive Adobe Flash game published online by the British Council. Contents 1 Overview 2 The trick 2.1 Proof for 2 digits …
57Lemnian language — The Lemnian language is a language of the 6th century BC spoken on the island of Lemnos. It is mainly attested by an inscription found on a funerary stele, termed the Lemnos stele, discovered in 1885 near Kaminia. However, fragments of… …
58-rd — symbol used after the figure 3 to indicate the ordinal number third or any ordinal number ending with third June 3rd 43rd St. compare d, nd * * * rd …
59↑ — The symbol ↑, an upward pointing arrow can refer to:* Yn, a Romanian Cyrillic letter * For the direction, see up * For the symbol, represented in Unicode, see Arrow (symbol) * For the mathematical notation of undefined, see Defined and undefined… …
60Magical objects in Harry Potter — The following is a list of magical objects used in Harry Potter. These objects exist for the use of the characters in the series by J. K. Rowling. Contents 1 Communication 1.1 Enchanted coins 1.2 Howler …
