Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 639
ARCHITECTURAL CONSTRUCTION. … Mil I I I I I Fept ARCHITECTURAL CONSTRUCTION. 628 The transmission of sound is by vibrations, illustrated by the waves formedby a stone thrown into still water; but direction may be given to sound, so thatthe transmission is not equally strong in every direction; thus, Saunders foundthat a person…
Mechanical drawing
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