Copyright © Philip M. Parker, INSEAD. Terms of Use.
| Domain | Definition |
Mining | A concentrating device that exploits differential densities of coal and its associated impurities by a combination of sluicing and centrifugal action. The material gravitates down through a stationary spiral trough with six turns (five for ore treatment) of mean radius 8 in (20.32 cm) with a fall per turn of 11 in (27.94 cm). Heavy particles stay on the inside, the lightest ones climb to the outside, and the resulting bandsare separated at convenient points. (references) |
Source: compiled by the editor from various references; see credits. | |
Hexadecimal (or equivalents, 770AD-1900s) (references)48 55 4D 50 48 52 45 59 27 53 53 50 49 52 41 4C |
| Leonardo da Vinci (1452-1519; backwards) (references)
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Binary Code (1918-1938, probably earlier) (references)01001000 01010101 01001101 01010000 01001000 01010010 01000101 01011001 00100111 01010011 00100000 01010011 01010000 01001001 01010010 01000001 01001100 |
HTML Code (1990) (references)H U M P H R E Y ' S   S P I R A L |
ISO 10646 (1991-1993) (references)0048 0055 004D 0050 0048 0052 0045 0059 0027 0053 0053 0050 0049 0052 0041 004C |
Encryption (beginner's substitution cypher): (references)42554750425239599532535043523546 |
| 1. Orthography 2. Bibliography |
Copyright © Philip M. Parker, INSEAD. Terms of Use.
