Death of a photon

The photon is the ubiquitous particle of light which carries nearly all information we get from the outside world. It usually disappears while being detected. The retina, for instance, absorbs light, changing it into an electrical current which triggers the … Read more →

paper is technology

Paper is the most successful communications innovation of the last 2000 years, the one that has lasted the longest and had the profoundest effect on civilization. One can easily make the case that without the technology that is paper, there … Read more →