Ice Disks
Although extremely rare, ice disks, also known as ice circles, do indeed appear naturally from time to time when conditions are perfect.
Ice discs form on the outer bends in a river where the accelerating water creates a force called ‘rotational shear’, which breaks off a chunk of ice and twists it around. As the disc rotates, it grinds against surrounding ice — smoothing into a circle. A relatively uncommon phenomenon, one of the earliest recordings is of a slowly revolving disc was spotted on the Mianus River and reported in a 1895 edition of Scientific American.
Sources and further reading:
http://en.wikipedia.org/wiki/Scientific_American
http://en.wikipedia.org/wiki/Ice_circle
Watch video:
http://www.dailymail.co.uk/news/article-2514162/Eerie-rare-ice-circle-forms-North-Dakota-Sheyenne-River.html
Image via Wikimedia Commons
Crop circles of the seas
ReplyDeleteI shared that fact with morons in daily motion page but those guys just had to troll everything I wrote.
ReplyDeletehttps://plus.google.com/108770956800246564038/posts/AFSCapwdRvo
ReplyDeleteVery cool Yuriy Fazylov , thanks for the extra info!
ReplyDeleteYuriy Fazylov Thank you for the link.
ReplyDeleteIn that way ,(maybe )can be generated air disc and we think its a Ufo ,for refractive reasons..
ReplyDeletearis nelson
ReplyDeleteI wouldn't know about that but I did hear of a phenomenon in which a violent geologic activity down below projects visible light into the atmosphere, making it visible to us.
If it is so it would explain things like spontaneous combustion. Because if it is possible in visible light it could do the same in IR.
Unfortunately I don't know enough about geology to track down the term or the phenomenon itself.
The other UFO possibility is Na+ (or sodium)-lasers.
Yuriy Fazylov Thank you for your answer.im sure every new idea or a documented view brings us closer to resolve unexplained phenomenon
ReplyDelete