A text-book of physics, largely experimental. On the Harvard college "Descriptive list of elementary physical experiments." (1891)
Hall, Edwin Herbert, 1855-1938, Bergen, Joseph Y. (Joseph Young), 1851-1917 · New York, H. Holt and Company · leaf 448
by a violin-bow. . Ifsand is sprinkled on the surfacesof such plates while they arevibrating, it will arrange itself inlines which mark the position ofthe nodes. The figures formedby the sand are known as Chlad-nis figures, in honor of the in-vestigator who first studied anddescribed them.… … FIG. 233.
Physics
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