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(Science Alert (Australia))   Scientists figure out the physics of those weird "hole-punch clouds" you see in the sky sometimes   (sciencealert.com.au ) divider line
    More: Interesting  
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3326 clicks; posted to Geek » on 03 Aug 2014 at 11:06 AM (1 year ago)   |   Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»



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2014-08-03 09:43:15 AM  

www.paranormalpeopleonline.com

 
2014-08-03 10:18:03 AM  
See: Bergeron-Findeisten.

This was pretty much figured out quite a while ago.

You have a cloud made up of mostly supercooled water droplets. Introduce a disturbance that creates some ice, and the ice crystal process kicks off, scavenging the supercooled water - turning cloud into snow, and the snow falls, snow crystals being much larger than cloud droplets, hence having a larger terminal velocity - it's one of those volume-vs-surface-area things where the air resistance stops clouds from falling (much) but not rain and snow.
 
2014-08-03 10:37:25 AM  
I'm going with updrafts. Those things are awesome.
 
2014-08-03 10:54:18 AM  
i1079.photobucket.com
 
2014-08-03 11:13:55 AM  
They first started to be noticed in the 1940s, and yet they've been mystifying people for ages?
 
2014-08-03 11:20:55 AM  
"Make a square, cloud.  Cloud, make a square"
 
2014-08-03 11:48:18 AM  

basemetal: [www.paranormalpeopleonline.com image 406x391]


Checked in for this guy: Done in one.
 
2014-08-03 12:02:45 PM  
This explanation has been around at least since 1981.  I remember seeing a series of holes over Tucson, AZ and a professor at UA was able to name the airline and flight number that caused them.
 
2014-08-03 12:16:53 PM  

hogans: "Make a square, cloud.  Cloud, make a square"


OK Also caused by airplanes.
 
2014-08-03 12:50:47 PM  

MarkEC: hogans: "Make a square, cloud.  Cloud, make a square"

OK Also caused by airplanes.


There was one day at Love Field in Dallas that some low, thin clouds were passing over. You could see the holes the planes punched in the clouds as they drifted perpendicular to the runway. You could also see the trails they left as the flew just below the clouds on approach.
 
2014-08-03 01:23:14 PM  
slivki.tritiumnet.org
 
2014-08-03 03:04:29 PM  
From reading FArk I thought they were made from the fist of an angry god
 
2014-08-03 03:34:13 PM  
farm1.static.flickr.com
 
2014-08-03 06:10:42 PM  
fc06.deviantart.net
 
2014-08-03 07:11:28 PM  
cloooud make a hole in the clooooud
https://www.youtube.com/watch?v=HaQiFAWxDxM
 
2014-08-03 07:37:29 PM  

natazha: This explanation has been around at least since 1981.  I remember seeing a series of holes over Tucson, AZ and a professor at UA was able to name the airline and flight number that caused them.


The sky, it's a series of, uh, holes...

/got nothin'
 
2014-08-03 10:12:43 PM  
I, for one, am impressed that TFA correctly used the word 'literally'.
 
2014-08-04 07:44:30 AM  

theorellior: They first started to be noticed in the 1940s, and yet they've been mystifying people for ages?


For most web writers, anything prior to 1970 may as well be from the Jurassic era.
 
2014-08-04 10:45:16 AM  
cmeconfessions.files.wordpress.com
 
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