Pacific Science Center

Shawn (right) and Justin (below) try out an Archimedes screw.

 

A simple mechanical device believed to have been invented by Archimedes in the 3d cent. BC It consists of a cylinder inside of which a continuous screw, extending the length of the cylinder, forms a spiral chamber. By placing the lower end in water and revolving the screw, water is raised to the top. The principle is applied in machines used for drainage and irrigation, and also in some types of high-speed tools. It can also be applied for handling light, loose materials such as grain, sand, and ashes.

 
Brian and the boys "guest anchor" the weather.

Uncle Lance took a turn in the shrinking machine.

 

But it doesn't stop him from maxing out the Grip Strength Test.

 

Ouch!!!

<Back ** To Sub Tour>