Thanks, Richard. It was about minus 10 celcius that day. The conditions needed to procuce this is a week or so of temperatures below freezing, and without any snow. When the sun shines on the clear ice, microscopic air bubbles trapped in the ice act as lenses. This cause a local warming, which makes the bubbles move upwards and join up to form larger bubbles. In my shot, the vertical movement is easiest to see in the lesser bubbles around the stack. They are droplet-shaped with the pointy end downwards. Jostein http://oksne.net ----- Original Message ----- From: "Richard Seaman" <[EMAIL PROTECTED]>
> folks, > > Here are my favorites from March, in no particular order: > > Bubble stack by Jostein �ksne > Here in Chicago it's snowing as I write and they're expecting 12 inches in > total - but I don't even want to think how cold it has to be before this > sort of thing happens. A fascinating photo which works nicely as a nature > image and as something very abstract. - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
