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 ...

Many of the shapes he studied can be found in nature. Archimedes mathematically described the constant windings in a simple spiral. This shape can be found on the bottom of a pinecone. Archimedes ...

But Peter Lu identified the patterns on the small rings as Archimedes’ spirals, which he believes are the oldest evidence of compound machines. Simple machines that move in only one way date ...

If you continue to add dots in this way, the shape will gradually expand into a spiral and form a figure called the 'Archimedes spiral.' If you remove all the non-prime numbers from this shape ...

The Archimedes screw is made up of a hollow cylinder and a spiral part (the spiral can be inside, but here you'll put it outside the cylinder). One end is placed in a low-lying fluid source and ...