Listen to this article: A report was published in 1927 telling how to create a new sea. Dr. John Ball detailed how carving a canal up to 50 miles into the Egyptian desert would flood the Qattara Depression (which lies beneath sea level). By controlling the flow of water, they could harvest hydroelectricity. Although the initial […]
The physics of skipping stones across water has been studied by many. One engineer in particular wrote a book on the subject: The Secrets of Stone Skipping. For nearly three decades, Jerdone Coleman studied stone skipping in a huge variety of conditions, even working with MIT’s Strobe Project Lab to photograph the stones in motion.
Pruney fingers, water aging, or water-immersion wrinkling occurs after fingers have prolonged exposure to water. But how does the wrinkling work? An early theory was that the skin cells absorb water and expand, forcing the skin to wrinkle. However, those with damaged nerves, leading to the fingers, occasionally do not experience these wrinkly fingers. So […]