Reports of the Committee on Electrical Standards Appointed by the British Association for the Advancement of Science - Couverture souple
Synopsis
Book by Jenkin Fleeming Maxwell James Clerk
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Présentation de l'éditeur
Membebs op the Committeb :P rofessor A. Williamson, F.R.S., Professor C, Wheatstone, P.R.S., Professor W. Thomson, E.R.8., Professor W. H. Miller, F.R.S., Dr. A. Matthiessen, F.R.8., Mr. F. Jenkin. The Committee regret that they are unable this year to submit a final Report to the A ssociation, but they hope that the inherent difficulty and importance of the subject they have to deal with will sufficiently account for the delay. The Committee considered that two distinct questions were before them, admitting of entirely independent solutions. They had first to determine what would be the most convenient unit of resistance, and second what would be the best form and material for the standard representing that unit. The meaning of this distinction will be apparent when it is observed that, if the first point were decided by a resolution ;n favour of a unit based on Professor Weber sor Sir Charles Bright and Mr. Latimer Clark ssystem, this decision would not a fect the question of construction; while, on the other hand, if the second question were decided in favour of any particular arrangement of mercury or gold wire as the best form of standard, this choice woidd not affect the question of what the absolute magnitude of I he unit was to beT he Committee have arrived at a provisional conclusion as to the first question ;and the arguments by which they have been guided in coming to this decision will form the chief subject of Uie present Report. They have formed no opinion as to the second question, viz. the best form and material for the standard. In determining what would be the most convenient unit for all purposes, both practical and purely scientific, the Committee were of opinion that the unit chosen should combine, as far as was possible, the five following qualities. 1. The magnitude of the unit should be such as would lend itself to the more usual elec
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