The different types of pendulums

There are three basic types of pendulums, the simple pendulum, Foucault pendulum and the double pendulum; each of these pendulums has a certain use:

THE SIMPLE PENDULUM

 This type of pendulum is the one that is formed of a weight or a bob (the spherical thing made of copper) that is suspended from a thin string (made of flexible wire). It has been important in the modern science. The simple pendulum is the most common, it can be seen in clocks, seismometers and metronomes.

 A curiosity of this pendulum is that it doesn’t work the same way in different parts of the world because the planet Earth isn't a true sphere.

THE FOUCAULT PENDULUM

 Jean Bernard Leon Foucault invented this pendulum. It is made with the same materials of a simple pendulum, but the bob is bigger and the string is larger. It swings in two dimensions, and its purpose is to demonstrate the rotation of the Earth without using any astronomical observation. 

                                                                          

THE DOUBLE PENDULUM

  It consists of two simple pendulums, one hanging from the other. It is also called “chaotic pendulum”, this is because the moves go higher and in a stronger way.  Usually the fist pendulum throws the second pendulum, which tends to move in unexpected forms. This pendulum is primary used in mathematical simulations.

*  We want to clarify that this aren't the only pendulums that exist. There are millions and millions of pendulums that are distinguish one from another just by the form and the materials, but that the purpose is totally different.

The Mermet that is the B. has a little space inside of it and it is use to put thing inside it so you can find something. For example if you need to find water you can put to drops of water inside it and ask, so the pendulum will direct you to where the water is.