The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 354
t difficulty, and with perfect comfort both to speaker and hearer.He had little doubt, from experiments he had recently made, that so manyas ten thousand people might be so arranged as to hear with ease and com-fort a good speaker. Mr. Scott Russells principle of construction is toplace the speaker… … Let A B C D represent the vertical section of a building for public speak-ing, S the height of the speaker on his platform, D C the floor of the build,ing; then, for the purpose that all the auditors should hear and see equallywell, they should be placed on the line S R B of the acoustic curve.…
Architecture · Civil engineering · Science
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