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The educational resource shows an interactive animation about the Carnot's engine: it is a theoretical model, not a real one, but we can already see in it the fundamental characteristics of real heat ...
The educational resource shows an interactive animation about the thermal equilibrium: when two substances at different temperatures are in contact, they exchange a certain amount of energy. One's tem ...
The educational resource shows a visual about fixed stars: today we know that the sun is no more than a star which is near to us. Stars like the sun, which are large gaseous spheres, of which 99% is h ...
The educational resource shows a visual about lunar phases: the moon is a rocky sphere about four times smaller than the earth. Its different aspects (as seen from the earth) are known as lunar phases ...
The educational resource shows a visual about the intensity of the electric field:What are the lines of force like in a field created by two electric charges?
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: th ...
The educational resource shows a visual about gravitational potential energy: the calculation of gravitational potential energy is very easy for small heights, as it is given by the formula Ep=mgh, wh ...
The educational resource shows how the energy is the capacity to produce changes in the environment by doing work or transferring heat. This means that when a body transfers heat or does work, its ene ...
The educational resource shows a Flash animation about the greenhouse effect The Earth is an open material system, because it interchanges matter and energy with outer space.
The educational resource shows an interactive animation about the perpetual motion: Is it possible to construct a system that moves indefinitely without having to supply any energy? If such a system w ...
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