Search results
Results from the WOW.Com Content Network
ABACABA is a "quickly growing word", often described as chiastic or "symmetrically organized around a central axis" (see: Chiastic structure and Χ). [4] The number of members in each iteration is a ( n ) = 2 n − 1 , the Mersenne numbers ( OEIS : A000225 ).
(For example, the digits shown in the seventh row of the 4 bone are 2 ⁄ 8, representing 7 × 4 = 28.) In the example below for 425 × 6, the bones are here depicted as red (4), yellow (2), and blue (5). First step of solving 6 x 425. The left-most column, preceding the bones shown coloured, may represent the 1 bone.
Brannock Device [1] Brannock Device at shoe museum in Zlín, Czechia. The Brannock Device is a measuring instrument invented by Charles F. Brannock for measuring a person's shoe size.
0 2 5 25 37 43 59 70 85 89 98 99 106: 1981 [19] John P. Robinson 14: 127: 0 4 6 20 35 52 59 77 78 86 89 99 122 127: 1985 [19] James B. Shearer 15: 151: 0 4 20 30 57 59 62 76 100 111 123 136 144 145 151: 1985 [19] James B. Shearer 16: 177: 0 1 4 11 26 32 56 68 76 115 117 134 150 163 168 177: 1986 [19] James B. Shearer 17: 199: 0 5 7 17 52 56 67 ...
In advanced mathematics, the 0-based ruler function is the 2-adic valuation of the number, [1] and the lexicographically earliest infinite square-free word over the natural numbers. [2] It also gives the position of the bit that changes at each step of the Gray code. [3]
Keuffel and Esser 7" slide rule (5" scale, 1954) [1] A slide rule scale is a line with graduated markings inscribed along the length of a slide rule used for mathematical calculations. The earliest such device had a single logarithmic scale for performing multiplication and division, but soon an improved technique was developed which involved ...
[4] [5] [6] [3] [7] Relatively uncommon in English-speaking countries, this is sometimes called a "protractor triangle", a term, however, also used for other similar designs. The original design has a hypotenuse length of 15.8 cm and features a 2×7 cm symmetry scale in millimeter and degree raster. [3]
A variety of rulers A carpenter's rule Retractable flexible rule or tape measure A closeup of a steel ruler A ruler in combination with a letter scale. A ruler, sometimes called a rule, scale or a line gauge or metre/meter stick, is an instrument used to make length measurements, whereby a length is read from a series of markings called "rules" along an edge of the device. [1]