Simple machines

by Montse Solsona

A Simple machine is a mechanical device that changes the direction or magnitude of a force. In general, they can be defined as the simplest mechanisms that use mechanical advantage (also called leverage) to multiply force. Usually we think to six classical simple machine which were defined by Renaissances scientists:

  • Lever
  • Wheel and axle
  • Pulley
  • Inclined plane
  • Wedge
  • Screw

Leonardo da Vinci (15 April 1452 - 2 May 1519)

Leonardo di ser Piero da Vinci was an Italian polymath, painter, sculptor, architect, musician, mathematician, engineer, inventor, anatomist, geologist, cartographer, botanist, and writer. He is widely considered to be one of the greatest painters of all time and perhaps the most diversely talented person ever to have lived. His genius, perhaps more than that of any other figure, epitomised the Renaissance humanist ideal. Leonardo has often been described as archetype of the Renaissance Man, a man of "unquenchable curiosity" and "feverishly inventive imagination".

How to build a pencil crossbow like Leonardo da Vinci you can be an inventor