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Bond1



Joined: 25 Apr 2000
Posts: 130

PostPosted: Mon Jul 15, 2013 12:54 pm    Post subject: Reply with quote

cgoudie1 wrote:
Bwahahaha!

Mr. Bond we must do beers sometime.

-Craig

Bond1 wrote:
Mulekick84 wrote:
What about us guys who jump one, then ride one?


I guess you just ruin your own day.


Just not after a day of sailing. I will most certainly be suffering an intolerable depression.
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isobars



Joined: 12 Dec 1999
Posts: 14032

PostPosted: Mon Jul 15, 2013 1:14 pm    Post subject: Reply with quote

scottwerden wrote:
Anyone ever watch swarming behavior like flies around a carcass, or schools of fish, or birds? They all behave independently and random but they manage to avoid collisions.

Man, you observe flies WAY too closely! Very Happy
First, who'd know if the filthy little buggars collide?
Second, who'd care?
Third, the flyswatter at my elbow has a 6" X 9" "blade" and a 3 foot handle; it takes out the whole dang swarm. Smile
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scottwerden



Joined: 11 Jul 1999
Posts: 210

PostPosted: Mon Jul 15, 2013 1:45 pm    Post subject: Reply with quote

isobars wrote:

Man, you observe flies WAY too closely! Very Happy


Old habits die hard. Former physicist. Spent many years studying collisionless gases. Swarming mimics Brownian motion so it is sort of interesting mathematically. I have only heard that flies don't collide. Smile
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kmf



Joined: 02 Apr 2001
Posts: 319

PostPosted: Mon Jul 15, 2013 1:49 pm    Post subject: Reply with quote

Well there ya go.

First and only rule of sailing, kiting the gorge.

Don't run into each other.

easypeasy.

KMF
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isobars



Joined: 12 Dec 1999
Posts: 14032

PostPosted: Mon Jul 15, 2013 2:04 pm    Post subject: Reply with quote

scottwerden wrote:
Former physicist. Spent many years studying collisionless gases. Swarming mimics Brownian motion so it is sort of interesting mathematically.

Interesting. My Master's thesis was a mathematical analysis of the diffusion of gasses through orifices at pressures low enough that collisions did not occur. My profs called it Fick's 3rd Law of Diffusion.

Mike
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merriam



Joined: 28 Apr 2008
Posts: 62

PostPosted: Mon Jul 15, 2013 11:18 pm    Post subject: Reply with quote

scottwerden wrote:

Old habits die hard. Former physicist. Spent many years studying collisionless gases. Swarming mimics Brownian motion so it is sort of interesting mathematically. I have only heard that flies don't collide. Smile


Swarming behavior is interesting to watch, agree about fish and birds, not so sure about flies. But what the heck is collisionless gasses? Does Boyles law apply?
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merriam



Joined: 28 Apr 2008
Posts: 62

PostPosted: Mon Jul 15, 2013 11:21 pm    Post subject: Reply with quote

isobars wrote:
scottwerden wrote:
Former physicist. Spent many years studying collisionless gases. Swarming mimics Brownian motion so it is sort of interesting mathematically.

Interesting. My Master's thesis was a mathematical analysis of the diffusion of gasses through orifices at pressures low enough that collisions did not occur. My profs called it Fick's 3rd Law of Diffusion.

Mike

Just asked Scott about this subject. Do collisions never occur or just very rarely?
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scottwerden



Joined: 11 Jul 1999
Posts: 210

PostPosted: Tue Jul 16, 2013 12:31 am    Post subject: Reply with quote

There are no collisionless gases here on earth. I did all my research on NASA projects launched into the ionosphere and magnetosphere.
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noshuzbluz



Joined: 18 May 2000
Posts: 774

PostPosted: Tue Jul 16, 2013 9:05 am    Post subject: Reply with quote

[quote="isobars"
Interesting. My Master's thesis was a mathematical analysis of the diffusion of gasses through orifices at pressures low enough that collisions did not occur. My profs called it Fick's 3rd Law of Diffusion.

Mike[/quote]

For a minute there I thought you did your Masters thesis on a One Cheek Sneak! Shocked

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inf2003



Joined: 15 Jan 2009
Posts: 137

PostPosted: Tue Jul 16, 2013 11:24 am    Post subject: Reply with quote

Quote:
Quote:
[quote="isobars"
Interesting. My Master's thesis was a mathematical analysis of the diffusion of gasses through orifices at pressures low enough that collisions did not occur. My profs called it Fick's 3rd Law of Diffusion.

Mike


For a minute there I thought you did your Masters thesis on a One Cheek Sneak! Shocked
[/quote]

Now that is funny!!!! Ficks law of passing gas Laughing
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