Copyright © Philip M. Parker, INSEAD. Terms of Use.
| Domain | Definition |
Mining | Prospecting that makes use of three fundamental properties of rocks. One is the resistivity, or inverse conductivity. This governs the amount of current that passes through the rock when a specified potential difference is applied. Another is the electrochemical activity with respect to electrolytes in the ground. This is the basis of the self-potential method. The third is the dielectric constant. This gives information on the capacity of a rock material to store electric charge, and it must be taken into consideration when high-frequency alternating currents are introduced into the earth, as in inductive prospecting techniques. Electrical methods are more frequently used in searching for metals and minerals than in exploring for petroleum, mainly because most of them haveproved effective only for shallow explorations. (references) |
Source: compiled by the editor from various references; see credits. | |
Crosswords: ELECTRICAL PROSPECTING |
| Specialty definitions using "ELECTRICAL PROSPECTING": equipotential-line method ♦ local current ♦ megger ♦ parallel wire method ♦ self-potential prospecting, Sundberg method. (references) |
| Thumbnail | Description & Credit |  | Science and research. Mineral prospecting. Electrical prospecting for metallic minerals may be carried on by using the dual coil radiometer to measure the electro-magnetic field of the earth, as it may be influenced by the presence of an ore body. Student. Credit: Library of Congress. |
Source: pictures compiled by the editor from various references; see picture credits. | |||
Hexadecimal (or equivalents, 770AD-1900s) (references)45 4C 45 43 54 52 49 43 41 4C 50 52 4F 53 50 45 43 54 49 4E 47 |
| Leonardo da Vinci (1452-1519; backwards) (references)
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Binary Code (1918-1938, probably earlier) (references)01000101 01001100 01000101 01000011 01010100 01010010 01001001 01000011 01000001 01001100 00100000 01010000 01010010 01001111 01010011 01010000 01000101 01000011 01010100 01001001 01001110 01000111 |
HTML Code (1990) (references)E L E C T R I C A L   P R O S P E C T I N G |
ISO 10646 (1991-1993) (references)0045 004C 0045 0043 0054 0052 0049 0043 0041 004C 0050 0052 004F 0053 0050 0045 0043 0054 0049 004E 0047 |
Encryption (beginner's substitution cypher): (references)3946393754524337354625052495350393754434841 |
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Copyright © Philip M. Parker, INSEAD. Terms of Use.
