Sunday, 27 February 2011


'Everybody you meet knows something you don't. Learn from them.' (Unattributed.)

Thursday, 17 February 2011



Continuing my interest in the right angle.

Monday, 14 February 2011

Saint Valentine's Day


A card for St. Valentine's day based on the SierpiƄski triangle.

I found this at xkcd some time ago and have just re-discovered it filed away on an external hard-drive.
The original is here.

Friday, 11 February 2011


I recently found a note that I had made to myself some years ago following a discussion with a colleague. I wrote the note because, at the time, I was so surprised at her response. I had raised something with her - something about which I have absolutely no recollection. (That probably means that it had something to do with 'admin'. This is something I detest but something in which she delights.) Rather than make a note of the matter I had raised (which I am sure was pretty minor and was not in need of any official documentation), she asked me to send her a memo. Send a memo!? There I was, standing there having delivered the communication in person. Why did she want me, when I had returned to my office, to send a printed memo back to where I had just been, containing the information that had just been imparted in person?
All that must have happened over ten years ago. Having re-lived that episode in writing the above, I still don't get it.

Monday, 7 February 2011

Across The Face Of The Sun

TheSun TheSun(Eclipse)

These two images of the sun come from the Astronomy Picture of the Day website. Look carefully. Only one of the dark marks on the surface of the sun is a sunspot – the one to the lower right of the partially eclipsed sun on the right. The other marks are the International Space Station (ISS) as it transits the face of the sun. Look even closer at the image on the left and you will see the space shuttle as a dot to the left of the ISS.

(Click on each image to go to the original.)

Saturday, 5 February 2011

Lines which have taken a walk

The 'Taking a line for a walk' images have taken a walk here and will continue to appear instead at sjlewisprojects.

Harmongraphs and Dreamlines

My harmonograph and dreamline images are now kept at sjlewisprojects.

Please, follow these links:

Harmonograph images

Dreamline images

Tuesday, 1 February 2011

After we are gone

Said of a US civil rights leader who died sometime around the start of 2010 and whose name I never discovered – 'He left more than he found'. This phrase I find quite pregnant with possible implications. We all leave the world changed in some way. By merely being here, we alter what goes on around us. However, this man left 'more'. This suggests that he contributed in some positive way; he didn't merely get involved for selfish reasons – that would have been a negative contribution in that it takes more than it gives.
Since reading and commenting on what was said of that man, I've heard a similar version – 'He left things better than he found them'. Interestingly, if one thinks about it, only human beings can leave things worse!