bodmas blog

Maths on the Web is a problem – html entities can provide a limited range of symbols – and I like the immediacy of a blogging approach to Maths. Else it is down to PDFs or scans or Whiteboard captures.

Spray can tags on a steel bridge and a newly painted wall

Becky – the 15 year old school refuser – came out with a tirade against surveillance and CCTV, eyes everywhere. She may have had a point.

A spreadsheet uses simplified low precision formulas to calculate the altitude of the Sun and the Moon for each hour of a given day. Change the latitude to see the effect of moving into the arctic circle. Change the date to see the effect of slipping towards Winter.

Where did Arial come from? The history of a computer font as told by a typographer.