Grant Watson

Bookmarks

• Infographic: Mega Shark « Stivo's Blog
  Humorous Infographic
  
• Balls of mud that shine
  Dorodango start out as sloppy mud balls but through careful shaping and polishing with dirt and sand, they end up perfectly round and shiny.
  
• Air Command Water Rockets Home
  A water rocket uses pressurised air to push water out the back of the rocket to produce thrust.
  
• Awesome DIY water rockets with drop-away boosters
  Single-stage soda bottle rockets over 600 feet using three drop-away booster engines that separate, NASA-style, when their thrust is spent. The boosters have upward-pointing pins that slip into rings on the main rocket, so they simply slip back out upon burnout.
  
• A Primer on Information Theory and Privacy | Electronic Frontier Foundation
  If we ask whether a fact about a person identifies that person... it turns out that ..., I could probably deduce their identity! Each of the facts is partially identifying.