 | In order to adjust a central heating and save energy, room temperatures must be measured with a thermometer. The thermometer was invented in the 17th century and its working principle is still used today. Household thermometers contain, inside a glass tube, a small amount of coloured alcohol ... »
adjust, thermometer, thermometers, tube, expands
| | Rating |  | | Difficulty |  | | Duration | 2h 0 min. | | Date | 20.07.2022 | | Language | |
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 | Inspired by an American tin toy of around 1916, this educated monkey performs multiplications without any mistake. His feet show the two numbers to multiply and a hole above his hands shows the correct result. The mechanism of this project is very interesting and can be studied and discussed. ... »
multiply, hole
| | Rating |  | | Difficulty | | | Duration | 0h 45 min. | | Date | 20.07.2022 | | Language | |
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 | This project helps to understand how an electric motor works (how it is possible to create a movement with electricity). Many electrical appliances use this technique (mixer, cd player, hair dryer, etc.). By generating electricity from the Sun, this project shows that there are alternative ... »
motor, appliances, dryer, generating, renewable
| | Rating | | | Difficulty |  | | Duration | 3h 0 min. | | Date | 20.07.2022 | | Language | |
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 | This project helps to understand how hydropower (energy from water in motion) can be transformed into electricity. Hydropower is a renewable energy regenerated through the water cycle. The Sun powers this cycle by evaporating water (from e.g. rivers, lakes or seas). This water condenses in the ... »
hydropower, renewable, regenerated, evaporating, lakes
| | Rating | | | Difficulty |  | | Duration | 3h 0 min. | | Date | 20.07.2022 | | Language | |
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 | This project is a very easy way to create a small pocket sundial. It helps to visualise the movement of the earth around the Sun and to understand how sundials work. This little sundial is a nice addition to other projects regarding solar energy. ... »
| | Rating |  | | Difficulty | | | Duration | 1h 0 min. | | Date | 20.07.2022 | | Language | |
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