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Solar pendulum

This solar pendulum demonstrates different scientific principles : Concentration of sunlight rays with reflectors Greenhouse effect and absorption of solar radiation by dark colours Expansion and contraction of water due to temperature changes Transformation of solar thermal energy into ... »
pendulum, sunlight, rays, reflectors, greenhouse
Note
Difficulté
Durée3h 0 min.
Date27.11.2013
Langue(s)

Solar popper

Apart from photovoltaic cells, there is another way to produce electricity with the Sun. This technique uses the Sun to heat water or air in a closed tank. High temperatures are reached by using parabolic mirrors which concentrate the Sun's rays. The heat increases the volume of water or air in the ... »
photovoltaic, tank, parabolic, mirrors, rays
Note
Difficulté
Durée3h 0 min.
Date05.11.2013
Langue(s)

My little turbines

The construction of wind or water turbines connected to a small generator (alternator) allows to experiment two different ways of transforming motion into electricity.Most power plants in the World produce the movement required to opterate the alternator by heating water with coal, natural ... »
turbines, generator, alternator, experiment, transforming
Note
Difficulté
Durée2h 0 min.
Date05.11.2013
Langue(s)

Parabolic solar cooker

The construction of a parabolic solar cooker helps to understand how it is possible to concentrate the solar rays to reach higher temperatures. This technique is used in experimental power plants in California and France. These plants use a field of mirrors that concentrate rays to a single point ... »
parabolic, rays, mirrors, tank, turbines
Note
Difficulté
Durée0h 0 min.
Date15.05.2013
Langue(s)

Water rocket

This water rocket DIYs project shows how you can stock energy and illustrates the action-reaction principle.   With the help of a bicycle pump, air is compressed in a tank (bottle) containing some water. By releasing the air, the water is expelled and the rocket is launched high in the air. To ... »
rocket, illustrates, bicycle, pump, compressed
Note
Difficulté
Durée3h 0 min.
Date03.05.2013
Langue(s)
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