anaclastic glass

Definitions

1. 1

   A glass or phial, shaped like an inverted funnel, with a very thin convex bottom that can…

   A glass or phial, shaped like an inverted funnel, with a very thin convex bottom that can be made concave or convex by sucking out or blowing in air, used to demonstrate the malleability of glass.

   • Anaclastic glasses are chiefly manufactured in Germany of a fine white glass, but any other glass, which is uniform in its substnace, and not very hard, will do equally well.
   • […], such as the anaclastic glasses (vases blown with a thin bottom that could spring in and out without breaking) to which Lentilius’s article was devoted.
2. 2

   Synonym of vexing glass.

   • The earlier poems of Spring and All are less exquisite than this: like anaclastic glasses which refract the broken rays of light, they relate in style to the structure of the crystal, rather than in idea to the lucidity of glass.
   • One astronomer's anaclastic glass; if a friend looks through it and a small screw is turned, it will blow pepper and snuff into his eyes.

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