[ So named after Julius Plücker, a German physicist. ] (Physics) (a) A vacuum tube, used in spectrum analysis, in which the part through which the discharge takes place is a capillary tube, thus producing intense incandescence of the contained gases. (b) Crookes tube. [ Webster 1913 Suppl. ]
[gǔ qín, ㄍㄨˇ ㄑㄧㄣˊ, 古琴] guqin, a long zither with 5 or 7 strings, plucked with a plectrum; the ancestor of the long zither family, dating back to pre-classical times (playing it was an essential accomplishment of a Confucian gentleman) #31,516[Add to Longdo]
[sān xián, ㄙㄢ ㄒㄧㄢˊ, 三弦] sanxian, large family of 3-stringed plucked musical instruments, with snakeskin covered wooden soundbox and long neck, used in folk music, opera and Chinese orchestra #67,571[Add to Longdo]
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