A microwave oven is a compact kitchen appliance designed for quickly heating, cooking, and defrosting food using electromagnetic waves called microwaves. It features a rectangular metal body with a front-opening door, usually fitted with a transparent mesh window for safe viewing during operation.
Inside, the oven includes a rotating glass turntable that ensures even heating of food. The interior is typically coated with heat-resistant material for durability and easy cleaning. On the front panel, there is a control interface consisting of buttons, a digital display, or rotary knobs that allow users to adjust time, power levels, and cooking modes.
Microwave ovens operate by generating microwaves that excite water molecules in food, producing heat internally rather than from an external source. This makes them energy-efficient.
The exterior design is usually sleek and modern, available in various finishes such as black, white, or stainless steel, making it suitable for contemporary kitchens.

Microwave Oven with basic internal Components

Vous venez de voir une gouttelette composée d’ARN et quelques molécules. Tel de l’eau dans l’huile, l’ARN peut s’organiser pour créer une gouttelette sans membrane.

Plongez dans le projet [RNADAPT](https://science-societe.univ-cotedazur.fr/themes/du-gene-a-la-proteine/rnadapt) pour en savoir plus et découvrez le portrait de [Christian Braendle](https://science-societe.univ-cotedazur.fr/portraits/braendle-christian) à l'origine du projet !

[Découvrez l'ensemble de la balade scientifique Street Science d'Université Côte d'Azur !](https://science-societe.univ-cotedazur.fr/street-science)

T2 machinerie - BRAENDLE Christian - RNADAPT

Vous venez de voir deux molécules : la **nicotine** et la **dopamine** ! La nicotine est la molécule présente dans le tabac et la dopamine celle libérée par le cerveau. Quels sont leurs rôles et leurs effets en particulier quand on est adolescent ?

Plongez dans le projet [NICADO](https://science-societe.univ-cotedazur.fr/themes/biomedecine/nicado) pour en savoir plus et découvrez le portrait de [Jacques Barik](http://https://science-societe.univ-cotedazur.fr/portraits/jacques-barik), enseignant-chercheur à l'Institut de Pharmacologie Moléculaire et Cellulaire (IPMC - Université Côte d’Azur, CNRS, INSERM), à l'origine du projet !

[Découvrez l'ensemble de la balade scientifique Street Science d'Université Côte d'Azur !](https://science-societe.univ-cotedazur.fr/street-science)

01 Nicotine Dopamine - BARIK Jacques - NICADO

free to use however you want, fully modeled, texured, and resized according to the molecules properties.

caffeine molecule2

Ball and stick 3D model of the water molecule (H2O) free for download.
Molecular structure in this model is scientifically accurate (104.5 degree).

The H2O molecule is also known as the water molecule. It is composed of two hydrogen atoms and one oxygen atom. The molecular weight of this compound is 18 g/mol, and it has a molar mass of 18 g/mol. This means that 1 mol H2O contains 60218000 grams (6 × 1023) molecules.
The H2O molecule has a linear geometry and a straight line bonding between each of the atoms (on average 137 pm). The interatomic distance in hydrogen is very small (75 pm), and oxygen is relatively big (96 pm). There are two molecules in the centre of this model, and they are bound by strong interactions. Also, they can move themselves freely in all directions following their binding interactions. The most important feature of this 3D model is that it shows clearly lines of symmetry.

H2O Molecule

In the first line you can see all movable joints of 7 amino acids. 

The other molecules are also very flexible but here just rotate.

Amino acids

Cette fois, c’est un brin d’ADN que vous venez d’observer en 3D ! Un brin d’ADN est si petit que même un microscope électronique ne permet que d’en apercevoir la forme. Ce brin d’ADN est composé de la succession de quatre molécules – mais avez-vous remarqué une molécule différente sur ce brin d’ADN ?

Plongez dans le projet [PFPImaging](https://science-societe.univ-cotedazur.fr/themes/du-gene-a-la-proteine/imagerie-cellulaire-la-vie-sous-un-autre-angle) pour en savoir plus et découvrez le portrait d'[Alain BURGER ](https://science-societe.univ-cotedazur.fr/portraits/alain-burger)à l'origine du projet !

[Découvrez l'ensemble de la balade scientifique Street Science d'Université Côte d'Azur !](https://science-societe.univ-cotedazur.fr/street-science)

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