[Alandriel (OP)]

Prandtl-Glauert singularity

Now how cool is that???

 [8D] [8D] [8D]

Thanks George  []
you timestamp on that post..... Did this keep you up all night?



***jumps off the fence***




Now just immagine me saying very casually over coffee next time I see my friend Prandtl-Glauert singularity


Gosh I really ought to take some course work.....

 [] [] []

[another_someone]

you timestamp on that post..... Did this keep you up all night?

Is the small lettering to make sure I am awake when I answer you? []

I am your opposite, more the owl (maybe even a bat) than the lark - and I was up doing other things - but yes, up later than I wanted.

[Alandriel (OP)]

Is the small lettering to make sure I am awake when I answer you?

Never thought of it that way - but why not?!?!? LOL
No, that's how I whisper......

You're the bat man, aye?


Wonder if I'll see ya tonight on my bat walk in Hyde Park



gotta love bats........














and snow owls#










.................. and right back on topic..................




 []

[iko]

...more supersonic pics here!

http://www.airshowaction.com/picweek.html

[techmind]

As I rather suspected, it is more due to low pressure than to high pressure, but otherwise you are about correct.
http://en.wikipedia.org/wiki/Prandtl-Glauert_singularity

Prandtl-Glauert singularity effects can be readily observed on a humid day by successfully cracking a whip. A visible cloud is produced at the point where the tip of the whip goes transonic.

Looks like something to try on one of those steamy-kitchen days...  true kitchen-science  []

[Alandriel (OP)]

hmmmmmm - now why did *this* pass my radar?

probably because George's article quote is loooong and it was wayyy late when I read it

Thanks for picking that out techmind.   []


Now a thought comes to mind - one of those stray thoughts.... Which goes into the category of 'that can't be true' and fits right in here..... and with the above

now talk about when the shoe fits


ok, ok, I'm getting on with it....


Now I've read somewhere - and now don't laugh, I'm serious - that when you sneeze, you actually break the soundbarrier.


Have you fallen off the chair?


Now how about sneezing on a humid day - a visible cloud is produced....

Easier perhaps than cracking a whip?


Where *does* one get a whip nowadays??


Apart from, erm...... well, you know


oh dear!!!  []

[another_someone]

Where *does* one get a whip nowadays??

What about a shop that sells riding tackle.