Also referred to as " billow clouds ", " wind row clouds ", or " wave clouds ", variations of the undulatus can be elements that have merged or single elements that have stretched through the sky.
12.
I need to know which mushrooms smell like maraschino cherries and which like dead rats, to note that a magpie in flight briefly resembles a wooden spoon, to recognize vertically trapped suppressed lee-wave clouds; so much of this research is concerned with four-dimensional observation and notation.
13.
The glider entered a wave cloud, lost control, and broke up at a speed beyond 400 km / h ( The never exceed speed, or " Vne " is 285 km / h, and the design dive speed, or " Vd ", is 324 km / h ).
