ceiling balloon

ceiling balloon
Год
 
Страниц
 
96
ISBN
 
9786130727444
Издатель
 
Книга по требованию

Описание:

A ceiling balloon is used by meteorologists to determine the height of the base of clouds above ground level during daylight hours. The principle behind the ceiling balloon is a balloon with a known ascent rate (how fast it climbs) and determining how...

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