The educational resource shows a visual about the principle of superposition: when we talk about systems with more than two bodies, we have to bear in mind the Principle of superposition of forces: the force exerted by one body on another is independent of that exerted by the rest.

The educational resource shows an interactive animation about the mechanical equivalent of heat.

The educational resource shows an interactive animation about the heating curve: when a body is heated, its temperature increases until there is a change of state; while the change takes place, the temperature remains constant.

El ODE muestra una escena interactiva donde se puede comprobar que el trabajo realizado por las fuerzas vivas (fuerza resultante ya restada la del rozamiento) que actúan sobre un sistema, es igual a su energía cinética.

Un montaje como el de la escena siguiente sirve para calcular la tensión superficial de un líquido jabonoso.

Concepto de tensión superficial

The educational resource shows an interactive animation about tempereture scales: there are various ways of expressing what the temperature of a body is. Each system is known as a temperature scale.

Telescope: optics and resolution range. Amateur astronomy is an enjoyable and educational passtime. If at any time you are able and want to get an astronomical telescope you should first find out about its possibilities.

The following visual which simulates a telescope can help you answer which telescope is better.

Telescope elements and the invention of the telescope

Graphs of the movements make data tables unnecessary.

Escena interactiva para estudiar el concepto de superficie equipotencial en un punto. El punto en cuestión se puede mover y está sometido al campo gravitatorio de un planeta, cuya masa se puede modificar. La escena permite dibujar las curvas equipotenciales y las líneas de fuerza asociadas a dicho punto.

Concept of surface tension

Concept of surface tension

When a wave is limited in its propagation at one or at both ends, a wave can appear with points which are not displaced with time (nodes).

Explanation of since an image is formed using convex lenses.

Explanation of since an image is formed using convex lenses.

The terms speed and velocity are sometimes confused although they have different meanings.

Concept of speed and mass of the electrons

The educational resource shows an interactive animation about the specific heat concept: when a body is heated, the temperature it finally reaches depends on the nature of the body. This property is known as specific heat.