Compasses

These effects were recorded in Greece around 2500 years ago and not long afterwards Democritus proposed an atomic structure for all matter. The magnetic compass seems to have taken another 1500 years to appear and magnetic theory a further half century. 

The element forms an alloy with osmium which is used for tipping pens and compass bearings. 

K. M. Pmett, Chemical Resistance GuideforElastomers, Compass Pubheations, 1988. 

If you do not listen to people, you cannot expect them to listen to you. Communication is a two-way activity. Do not make assumptions about what people know, think, or want done about risks. Take the time to find out what people are thinking. Often, people are more concerned about issues such as trust, credibility, competence, control, voluntariness, fairness, and compassion than about mortality statistics and the details of QRA. Use techniques such as interviews, focus groups, and surveys to gauge what people are thinking. 

Numerous analyses of data routinely collected in the United States have been performed by the U.S. National Climatic Center, results of these analyses are available at reasonable cost. The joint frequency of Pasquill stability class, wind direction class (primarily to 16 compass points), and wind speed class (in six classes) has been determined for various periods of record for over 200 observation stations in the United States from either hourly or 3-hourly data. A computer program called STAR (STability ARray) estimates the Pasquill class from the elevation of the sun (approximated from the hour and time of year), wind speed, cloud cover, and ceiling height. STAR output for seasons and the entire period of record can be obtained from the Center. Table 21-2 is similar in format to the standard output. This table gives the frequencies for D stability, based on a total of 100 for all stabilities. 

The frequency of occurrence of winds from each of the 36 direchons for the two sites is given in the second and third columns of Table 21-6. Knoxville has its maximum from 240°, with frequent winds also from adjacent points. There is a secondary maximum across the compass (in the vicinity of 60°). Nashville, on the other hand, seems to have only one principal maximum (from 180°). To explore the magnitude of the differences, the fourth column is the difference for each direchon. Summing the absolute values of the differences and expressing them as a percentage of the total number of hours of observations shows that the differences constitute 62% of the total. 

The range in properties of a high-temperature alloy, within the compass of a nominal designation or a simplified specification, is much greater than most engineers... 

Gyro-compass This provides a measured heading proportional to the aetual heading... 

Point of compass Number of floors Partitioning Zoning... 

Point to Consider People in tl>e community are often more concerned about such issues as trust, credibility, competence, control, voluntariness. fairness, caring, and compassion tlian about mortality statistics and tl>e details of quantitative risk assessment. 

Kesselstein, m. boiler scale compass brick, -ablagerung, /. deposit(ion) of boiler scale, -beseitigung, /. removal of boiler scale, -be-seitigungsmittel, n, (boiler) scale remover, disincrustant. -bilder, -bildner, m. (boiler) scale former, -bildung, /. (boiler) scale formation, incrustation. -gegenmittel, n. boiler compound, disincrustant. -kruste, /. incrustation of boiler scale. -losemittel, -losungamittel, n. (boiler) scale solvent, dis ... 

Rahmen, m. frame, framing stator rack border, gasket compass bounds, scope, -filterpresse, /. frame filtei press, -leder, n. welting leather. 

Following the operating principle of the most commonly used universal joint, the input shaft and the output shaft both terminate in yokes that are oriented in mutually perpendicular planes. The branches of each yoke are pinned to a cross connector so that each yoke can pivot about its beam of the cross. This mechanism was employed in the sixteenth century by Italian mathematician Geronimo Cardano, who used it to maintain a shipboard compass in a horizontal plane, regardless of the movement of the ship. Consequently it is often called a Cardan joint. 

Atherton, W. A. (1984). From Compass to Computer San Francisco San Francisco Press. 

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