Sentence Examples


  • In the former he developed a valuable method for the investigation of aerial waves within pipes, based on the fact that a finely divided powder - lycopodium, for example - when dusted over the interior of a tube in which is established a vibrating column of air, tends to collect in heaps at the nodes, the distance between which can thus be ascertained.
  • The leaves of the true mosses and those of the club-mosses (Lycopodium, Selaginella) being somewhat alike in general appearance and in ontogeny, might be, and indeed have been, regarded as homologous on that ground.
  • The country in general is a fern paradise, and the iridescent creeping Selaginella (akin to Lycopodium) festoons the undergrowth by the wayside.
  • In his experiments upon this subject Fraunhofer employed plates of glass dusted over with lycopodium, or studded with small metallic disks of uniform size; and he found that the diameters of the rings were proportional to the length of the waves and inversely as the diameter of the disks.
  • In diameter, has a little lycopodium powder introduced, and the powder is allowed to run all along the tube, which is then fixed horizontally.
 

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