Vietnam or Thailand ? Vote for the TOP Country of the Week !
Updated: May 21, 2025
In this connection the hexagonal, tetrahedonal type of crystallisation is first to be noted; then the infinite number of forms in which this can be modified together with result of fractures: two forms predominate, the plate and the needle; these forms falling through air assume definite position the plate falls horizontally swaying to and fro, the needle turns rapidly about its longer axis, which remains horizontal.
Word Of The Day
Others Looking