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.
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.
The key is to identify "reputed followers,"… If lots of people follow you, and then you follow someone–then even though this [new person] does not have lots of followers," his tweet is deemed valuable because his followers are themselves followed widely.
View-source provides a powerful catalyst to creating a culture of shared learning and learning-by-doing, which in turn helps formulate a mental model of the relationship between input and output faster.
This machine lets you delete all your energy sucking social-networking profiles, kill your fake virtual friends, and completely do away with your Web2.0 alterego.
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.