As part of our Viking Russia trip, Bev and I spent a day exploring this militarized Swedish island.

I spent half and hour watching these three fishermen through my telescope pulling in big fish across the bay. The image its poor because it was tipping-down-rain at the time.

This looks like a scene from a mystery movie or the library at Hogwarts…

For George, the New Yorker.

I am always delighted to see an excellent graphic depiction of a complicated dataset.

This little video about Pendulum Waves could be the heart of an entire physics lecture ....simple, elegant, beautiful.

Trip of a lifetime…

I think you will particularly like this luminous image of Stonehenge. But, I noticed the disparity between a rising red Sun on the horizon and the well illuminated sarsen and lintel stones.

A clever depiction of the proof that the area of a circle is Pi r squared

The following is a question given on the University of Arizona chemistry mid-term.

Everyone is surprised that the horizon is not really very far away in typical observations like looking out to sea.

Here is the “vanishing area” puzzle explanation I promised. It turns out to be part of a whole course-of-study at the university level.