Blogs

1. Image format conversions

   Although digital images are ubiquitous, one image format does not suit all applications. Printed paper, electronic displays, images on the Web, etc., each call for the same image in a different format. In this tutorial, we explore the different format conversion tools that are currently available. The ImageMagick suite, the cairo backend, the poppler utilities, the Inkscape vector graphics editor, and CairoSVG are each identified for their individual strengths, that make them the tools of choice for specific image conversion tasks.

2. Reflections on the Mind of Nikola Tesla

   Nikola Tesla was a complex genius whose prolific mind produced many electrical marvels. In this paper, we focus on only four of his documented mental characteristics: (1) an extremely acute sense of hearing and sight; (2) a visualization so vivid as to mimic reality; (3) eccentricities of habit and behaviour; and (4) making grandiose claims, some of which remain open until today. Each of these is examined in some detail, especially with respect to his creativity, and questions worthy of further investigation are posed. Finally, the hypothesis of mental evolution, as proposed by R M Bucke, is put forward as a possible explanation for Tesla’s prodigious and rare mind.

3. Eigenvalues and Eigenvectors—Why are they important?

   A university academic friend of mine recently remarked that it was not easy to motivate students to study eigenvalues and eigenvectors, let alone appreciate their importance: the subject itself was abstract, and the applications tended to be domain-specific and somewhat arcane.

4. The Making of a Logo

   My friend Solus “Sol” Simkin has a well-earned reputation as a Renaissance man. Among other things, he is a virtuoso of design. He endows his creations with an ethereal air of perfection—where mathematics meets aesthetics—to transmogrify the mundane or banal into unforgettable works of art.

5. A Peacock in Mid Flight

   This morning, I saw a peacock in mid-flight. It was a wondrous and unforgettable sight, the more so because unexpected. I was walking as usual in the neighbourhood, which is known to be home to a large number of peacocks. As I turned to my right, I saw what I thought was an unusually long bird in flight. Only as it approached me did I realize that it was a peacock in mid-flight.