"This unique piece of apparatus uses Lissajous figures to show that the ratio of the frequency ratios in a diatonic scale are ratios of small numbers. On the side is an air-driven vibrating reed with a small mirror attached to its free end....
Scientific apparatus and instruments; Santa Clara University (Calif.)
""This unique piece of apparatus uses Lissajous figures to show that the ratio of the frequency ratios in a diatonic scale are ratios of small numbers. On the side is an air-driven vibrating reed with a small mirror attached to its free...
Agricultural machinery; Agriculture; Arbuckle, Clyde, 1903-1998; Orchards; People; Photographs; Santa Clara County (Calif.)--History; Spraying equipment; Technology;
Black-and-white photograph of four men spraying trees in an orchard. On verso of photo: "Keeping an orchard healthy called for a lot of work. It meant spraying, dusting, pruning, irrigating, or some other form of attention almost the year...
