Observations and Results How does the Archimedes screw manage to move water uphill? When you bend the tubing into a spiral shape, it forms individual pockets where water can get trapped because ...

Narrator:] The spiral pattern around the trunk of the ... I looked at what various writers had said about Archimedes and the water-raising screw, and they thought the screw itself was older ...

Eccentric. Open-ended. Captivating. Native Americans carved spirals as petroglyphs. The Greek mathematician Archimedes wrote about them around 225 B.C. Jacob Bernoulli, a 17th century ...

Narrator:] The spiral pattern around the trunk of the ... I looked at what various writers had said about Archimedes and the water-raising screw, and they thought the screw itself was older ...