Zen and the Art of Prop Making

The Waterfall Illusion by Escher, like his other drawings, is a sublime example of 3D illusions drawn in 2D. Some of the images are not so impossible to recreate in real life. A recent example I discovered was his 1961 drawing of a Waterfall Illusion recreated in real life. The illusion only works from one viewpoint but this is necessary with many illusions. How the Waterfall Illusion works While most two-dimensional artists use relative proportions to create an illusion of depth, Escher here and elsewhere uses conflicting proportions to create the visual paradox. The Waterfall Illusion has the structure of a Penrose triangle, an impossible object designed independently by Roger Penrose and Oscar Reutersvärd. Below is a video of a clever model reconstruction of the Waterfall Illusion drawing. Using elements cut in perspective the illusion comes alive when seen from a particular viewpoint. Many Renaissance churches used this single viewpoint idea to achieve fantastic effects o...

When searching for information on the Internet you want relevant content in your search results. Usually you get relevant content for your query in the first few pages of results. If the information you seek is more than 6 months old it will be buried beneath tens of millions of irrelevant results because it is deemed not relevant enough to make it to the top of search results. This makes the relevant content you are after virtually impossible to find. Google judges relevant content as content that is updated regularly as opposed to static content. An historical document is static content but it is still relevant content . Static historical content should be just as accessable as regularly updated content and should not be prioritised in importance by companies who control access to this information and have a financial interest in search results. Is this trend what we have to look forward to in the future? It's hardly a satisfactory state of affairs. "What's Hot" v...