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The Textbooks Were Wrong About How Your Tongue Works
(www.nytimes.com)
just science related topics. please contribute
note: clickbait sources/headlines aren't liked generally. I've posted crap sources and later deleted or edit to improve after complaints. whoops, sry
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Causes less air pressure at the upper side, so the lower side pushes up, no?
And the upside down flying is simply due to gliding mechanics, no?
Nope. Read the link, it's fascinating and complicated.
Not sure what you mean by this. But planes still generate lift when flying upside down. Wings with a symmetrical curve can also generate lift. Flat wings with no curve at all can also generate lift.
Pressure differences are definitely involved. That's the only way air pushes against things, after all, so the fact that there is a lift force implies a pressure difference. However the cause of the pressure difference is rather complicated.