Astronaut Mark Watney introduces the Ares 3 crew before their mission launch.
Posted 4 years ago by boyt in category: film   Comments (0)

310 mph / 500 km/h
Posted 8 years ago by techman in category: technology   Comments (2)

Smarter Every Day - Prince Rupert's Drops are toughened glass beads created by dripping molten glass into cold water, which causes it to solidify into a tadpole-shaped droplet with a long, thin tail. These droplets are characterized internally by very high residual stresses, which give rise to counter-intuitive properties, such as the ability to withstand a blow from a hammer or a bullet on the bulbous end without breaking, while exhibiting explosive disintegration if the tail end is even slightly damaged.
Posted 3 years ago by kurdt in category: geeky   Comments (0)

American physicist
Posted 7 years ago by boyt in category: interesting   Comments (0)