Aak777 From Qatar, joined Apr 2001, 284 posts, RR: 0 Posted (10 years 8 months 1 week 2 days 19 hours ago) and read 2709 times:
I know that over the wing there is a region of low pressure, and at high humidity percentages, water vapor becomes visible, but I thought high pressure helps water to remain in the liquid state not the low pressure. Now am I right or am I confused??
Staffan From , joined Dec 1969, posts, RR: Reply 1, posted (10 years 8 months 1 week 2 days 18 hours ago) and read 2685 times:
The faster flowing air creates a lower pressure, and when pressure drops, so does temperature. And when temperature drops below the local dewpoint, you get condensation. It's not the low pressure that causes condensation, it's the drop in temperature.