I’ve seen videos from the early 1900s of smoke curtains deployed by planes to hide ships or places, how does these work? How does the smoke spread downwards but stay in one consistent ‘curtain’?
Appreciate any info! 😀
In: Engineering
1900s would be a bit early. 1920s is more accurate. [Popular Mechanics](https://www.popularmechanics.com/military/weapons/a34240046/airplane-makes-battleship-disappear/) did a piece on this.
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