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NQ6U
09-08-2014, 11:15 PM
Turn the sound down for this one, and dig that crazy shockwave.


https://www.youtube.com/watch?v=Hx5UecbuYw8

VE7DCW
09-09-2014, 12:14 AM
That type of pressure shock wave is similar to the type of effect you see in those old time movies of atomic bomb tests done in the pacific ocean in the late 1940's......correct me if i'm wrong,but wasn't that called a Wilson condensation cloud effect? :-?

I find the physics behind this stuff just plain neat! :yes:

n2ize
09-09-2014, 08:10 AM
That type of pressure shock wave is similar to the type of effect you see in those old time movies of atomic bomb tests done in the pacific ocean in the late 1940's......correct me if i'm wrong,but wasn't that called a Wilson condensation cloud effect? :-?

I find the physics behind this stuff just plain neat! :yes:

No these are Wilson clouds
http://m.youtube.com/watch?v=zCoxmru38Xs#

W5BRM
09-09-2014, 09:18 AM
No these are Wilson clouds
http://m.youtube.com/watch?v=zCoxmru38Xs#


Another movie I gotta watch that I haven't seen in years! I LOVE the soundtrack as well

n2ize
09-09-2014, 09:43 AM
The Wilson clouds are the ones that form rapidly and then quickly vanish. Particularly noticeable in atomic blasts done under or on water I.e high humidity. They are a type of condensation cloud. They can also occur when very high amount s of conventional explosives are detonated.

NQ6U
09-09-2014, 09:51 AM
The Wilson clouds are the ones that form rapidly and then quickly vanish. Particularly noticeable in atomic blasts done under or on water I.e high humidity. They are a type of condensation cloud. They can also occur when very high amount s of conventional explosives are detonated.

Or when volcanoes erupt.

VE7DCW
09-09-2014, 11:33 AM
Or when volcanoes erupt.

Exactly! ........ the shockwave from that eruption caused a condensation cloud that radiated out from the eruption point.... a Wilson cloud effect. Also you can note a similar effect from the wings of jet aircraft as they impact moisture laden air....... still it's neat stuff! :yes:

NQ6U
09-09-2014, 11:58 AM
Exactly! ........ the shockwave from that eruption caused a condensation cloud that radiated out from the eruption point.... a Wilson cloud effect. Also you can note a similar effect from the wings of jet aircraft as they impact moisture laden air....... still it's neat stuff! :yes:

From all the leading edge surfaces as they approach supersonic speed, for that matter. I saw this demonstrated at the Miramar air show a few years back as an F-16 flew by just below the speed of sound.

VE7DCW
09-09-2014, 12:11 PM
From all the leading edge surfaces as they approach supersonic speed, for that matter. I saw this demonstrated at the Miramar air show a few years back as an F-16 flew by just below the speed of sound.

Agreed.... I saw it as well even in warm, supposedly less humid air,in the Fraser Valley with CF-18 fighter jets doing their demo's at the Abbotsford Airshow in August....... neat! :yes:

N2NH
09-09-2014, 05:38 PM
Impressive. But aren't vapor trails caused by condensation of humid air?

NQ6U
09-09-2014, 06:32 PM
Impressive. But aren't vapor trails caused by condensation of humid air?

Yes, but what you see in the video is a different phenomenon.

n2ize
09-11-2014, 05:26 AM
Not to be confused with the Wilson Cloud Chamber which is used to trace particles as they are emitted from a radioactive material. Although the traces are tiny condensation clouds formed in a chambre containing supersaturated alcohol vapour. The emitted subatomic particles cause the vapor around them to ionize forming a tiny and very narrow condensation cloud.

n2ize
09-11-2014, 05:40 AM
BTW I stand corrected. The OP's original video did produce a Wilson Cloud. Not as dramatic as the ones produced by the Operation Crossroads Baker atomic test but still a Wilson cloud. When I originally viewed it I was watching on a small smartphone screen and it wasn't noticeable. But re-watching it on the big screen it is definitely there showing that volcanoes and conventional explosives can produce a Wilson cloud.

Holy Smokin Toledo's.

K7SGJ
09-11-2014, 08:34 AM
The real Wilson effect

Hidy Ho neighbor

https://forums.hamisland.net/attachment.php?attachmentid=13034&stc=1

NQ6U
09-11-2014, 08:54 AM
The real Wilson effect

Hidy Ho neighbor

https://forums.hamisland.net/attachment.php?attachmentid=13034&stc=1

Or, possibly:

http://comicskingdom.com/system/characters/avatars/4747/website-MrWilson300.jpg?1307482559

kb2vxa
09-11-2014, 10:42 AM
Look up W2SJW.