| Webster's Online Dictionary |
| Expressions | Domain | Definition | |
| Angular error of closure | Environment | The discrepancy between the summation of a series of field angles and the theoretical sum. (references) | |
| Error of closure | Environment | The amount by which a value of quantity obtained by surveying operations fails to agree with a fixed or theoretical value of the same quantity. (references) | |
| Error of closure | Mining | A. Of a traverse, the amount by which the computed position of the last point of the traverse fails to coincide with the initial point; i.e., the length of line necessary to close the traverse. Frequently, also, the ratio of the linear error of closure to the perimeter (also known as the error of the survey) b. Of angles, the amount by which the sum of the measured angles fails to equal the true sum c. Of azimuths, the amount by which the measurement of the azimuth of the first line of a traverse, made after completing the circuit, fails to equal the initial measurement d. Of a level circuit, the amount by which the last computed elevation fails to equal the initial elevation; or the amount by which the differences of elevation in a circuit fail to add up (algebraically) to zero e. Of a horizon, the amount by which the sum of the angles measured around the horizon differs from 360 degrees f. Of a triangle, the amount by which the sum of the three angles of a triangle differs from the true sum; i.e., 180 degrees plus the spherical excess i.e., the length of line necessary to close the traverse. Frequently, also, the ratio of the linear error of closure to the perimeter (also known as the error of the survey). (references) | |
Source: compiled by the editor from various references; see credits. | Top | ||
