Blog. October 2010

  • Learning online

    A while ago I wrote about learning Chinese online, but there are resources for learning just about anything online. The internet is my primary source of information when learning programming nowadays. The statistics for my website suggest that the main reason people visit it is that they want to learn Pygame, Inkscape or how to make an SVG.

    A couple of sites I have recently discovered have a lot of good resources for studying.

  • pH, pKa, pI and protein charge

    What is acidity?

    Most people know that pH is a measure of acidity, but what is acidity? Well, the Brønsted-Lowry theory states that an acid is a chemical that donates a proton (H+), while a base is a chemical that accepts a proton. The Lewis theory defines acids as chemicals that accept electrons, which is often, but not always, the same thing. For our purposes, acids are chemicals that can donate a proton, while bases (or alkaline substances) are chemicals that accept a proton.