Snow particles fall at rates ranging from nearly zero for tiny crystals to about a metre per second for a typical snowflake and several times larger for melting snow.

• 雪粒子由天上降至地上的度快慢各异,极小的晶体下降度近乎零,一般雪花则以每秒一米的速度,溶化中的雪还要快好几倍。