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Solar food dehydrator

Solar energy is commonly used to produce hot water or electricity for our buildings. Another, lesser known use is for drying food.This technology allows fruit, vegetables, fish or meat to be dried without the use of fossil fuels and pollutants. With less moisture, food can be stored for long ... »
drying, fossil, fuels, pollutants, moisture
Note
Difficulté
Durée3h 0 min.
Date25.07.2022
Langue(s)
français english

Camera obscura

The camera obscura is the ancestor of the photographic camera and uses the same optical principle. Before the invention of photography, some painters like Canaletto in Vense in the 18th century used this technique. It is also likely that Vermeer in the 17th century used as well a camera obscura for ... »
photographic, hole, projected, rays, phenomenon
Note
Difficulté
Durée1h 0 min.
Date20.07.2022
Langue(s)

Survival Kit

This project is a good way to think about the essential elements we would need if we were lost in the wild. It helps us understand that energy is essential to our existence. Indeed, it is thanks to energy that we can meet our basic needs for food, heat, light and communication.The elements of this kit ... »

Note
Difficulté
Durée0h 30 min.
Date19.07.2022
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