Tag: sphere
Archimedes – the Man who invented the Death Ray
Archimedes lived over 2,000 years ago in Syracuse on the island of Sicily. He was a mathematician, astronomer, physicist, engineer and inventor. Many of his great inventions came about while defending Syracuse when it came under attack from the Romans. Click here for signed copies with free poster. The leader of the Roman army was…
Drawing Spheres – Part 1
A sphere is made from millions of circles that all share the same diameter or central axis line. This is how the world spins on it’s axis and how we separate the world into lines of longitude and latitude. Imagine the Earth, spinning in space, and draw an imaginary line all the way around from…