If moist air is less dense, why can you cut it with a knife?

[write-stuff]

 

[Tarheelpilot]

I like it. Can you do one on why the speed of sound changes based on Temperature. . I have to explain that one a lot to guys getting first jet experience when we are talking about compressibility of a free gas and the relationship of IAS, TAS and Mach

 

[PilotRPI]

Excellent video. Short, sweet, and too the point! Not much manages to retain my attention the whole way through.

Now, please explain why a horse quarter-sheet is named so when it clearly is about half the size of a normal sheet. (Waiting for my wife at the barn and when I asked she just rolled her eyes)

 

[Cooter]

Good video but he didn’t explain why it feels heavier. My guess is a reduced evaporation rate with humid air, even though it’s less dense.

 

[MauleSkinner]

Good video but he didn’t explain why it feels heavier. My guess is a reduced evaporation rate with humid air, even though it’s less dense.

I'd say because it's harder to breathe due to the lower partial pressure of oxygen.

 

[Cooter]

I'd say because it's harder to breathe due to the lower partial pressure of oxygen.

Could be. Except that you don’t feel the heaviness with just pressure changes, at least I never have. Either way I could do without it.

 

[Velocity173]

All I know is that it’s easier to see shockwaves in moist air.

 

[SoCal RV Flyer]

Thanks. I feel slightly less dense myself after watching that.

 

[SixPapaCharlie]

My plane should fly really fast under water.

 

[Skyrys62]

My plane should fly really fast under water.

Waiting for the video!

 

[timwinters]

Nice vid!