Why does the Gnomon on a Sundial Point South?
The pointy bit of a sundial is called a ‘gnomon’. It is the part that casts the shadow and in the northern hemisphere it points…
The pointy bit of a sundial is called a ‘gnomon’. It is the part that casts the shadow and in the northern hemisphere it points…
Which direction are we looking in the picture above? Spoiler alert… answer next… Answer: 1 Point for W. 2 Points for WNW. The snow has…
Two questions today. I took this picture yesterday. Which direction are we looking? And a tougher one: what sign is there in this picture that…
Here is the first of a short series of animations that I will be publishing over the coming weeks. Hope you enjoy!
I recently got back from a brief work trip to the United Arab Emirates. Whilst there I visited Dubai, Sharjah, Ajman and Fujairah and spent…
My thanks to Alan Gibson, urbane forager and regular contributor to this blog, for another great image. In this picture we are looking at two…
The colour of water is determined by: A) What’s under it. B) What’s in it. C) What’s on it. D) And by light levels and…
My thanks to Sebastien from Leipzig, Germany, for sending in this photo of a painting in the Museum of Communism in Prague. Have a good…
I’m just back from a brief visit to Prague, where I witnessed many wonderful things. Included among the small delights were these views from the…