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Led lamp

This project goal is to build a simple table lamp using an LED bulb. This is an opportunity to present tje many adavantages of light emitting diodes (LED) which have now replaced the classic incandescent light bulbs in Europe : Very good energy efficiency (for the same amount of light, LED bulbs ... »
lamp, bulb, emitting, diodes, incandescent
Note
Difficulté
Durée2h 0 min.
Date22.07.2022
Langue(s)
français english

Amazon rainforest in a bottle

This project creates a micro-climate in a PET bottle that mimics the functioning of a rainforest.   It is a kind of terrarium that, if you are lucky, is self-sufficient and runs on its own cycle.   An Englishman, Mr Latimer, was had this chance and his terrarium, enclosed in a large glass bottle, has ... »
mimics, rainforest, latimer, enclosed, info
Note
Difficulté
Durée1h 0 min.
Date22.07.2022
Langue(s)

A glass to see in reverse

As soon as a ray of light changes from a transparent medium to another, for example from air to water or from air to glass, its path is deviated, because these materials do not scatter light in the same way.   This principle is used to focus light in a magnifying glass or to make lenses for cameras or ... »
transparent, deviated, scatter, magnifying, lenses
Note
Difficulté
Durée0h 10 min.
Date22.07.2022
Langue(s)
français english

A rainbow in your room

This project creates a rainbow inside a room.   Using a simple freezer bag filled with water, it is possible to create a home made prism capable of difracting light and separating colours into a rainbow.   This project was developped for the magazine 'Campus Junior' of the University of Geneva. ... »
freezer, prism, separating, geneva
Note
Difficulté
Durée1h 0 min.
Date22.07.2022
Langue(s)
français english

Solar boat

Building a solar boat helps to understand how photovoltaic solar cells can be used to produce electricity. Toy using solar cells represent often machines that do not exist or which are not logical. It is not uncommon indeed to find toys of helicopters or windmills powered by photovoltaic cells. ... »
photovoltaic, windmills, powered, geneva
Note
Difficulté
Durée3h 0 min.
Date20.07.2022
Langue(s)
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