| 释义 |
ru·pert's drop
\ˈrüpərts-\ noun
Usage: usually capitalized R
Etymology: after Prince Rupert of Germany died 1682 who first brought it to England to his uncle Charles I of England
: a congealed blob of glass formed by dropping melted glass into water and setting up such residual stresses that the globule explodes violently when the surface is scratched or a piece broken off |