Transcription of Systems of Units and Conversion Factors - Cengage
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Systems of Units and Conversion Factors - Cengage
Systems OF UNITSM easurement Systems have been a necessity since people first began to buildand barter, and every ancient culture developed some sort of measurement sys-tem to serve its needs. Standardization of Units took place gradually over thecenturies, often through royal edicts. Development of the British Imperial Sys-tem from earlier measurement standards began in the 13th century and was wellestablished by the 18th century. The British system spread to many parts of theworld, including the United States, through commerce and colonization. In theUnited States the system gradually evolved into the Customary system (USCS)that is in common use concept of the metric systemoriginated in France about 300 years agoand was formalized in the 1790s, at the time of the French Revolution.
The International System of Units, like the metric system, is based upon length, time, and mass as fundamental quantities. In these systems, force is ... B4 APPENDIX B Systems of Units and Conversion Factors TABLE B-1 PRINCIPAL UNITS USED IN MECHANICS International System (SI) U.S. Customary System (USCS)
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