Introduction: Pour comprendre le noyau, les chromosomes or la synthèse de protéines, il faut au moins connaître le noyau de façon rudimentaire – vidéo préparée par l’INSERM par son MOOC sur la cellule.
Ce MOOC est du genre niveau lycée, années 10 à 12 en Colombie Britannique. Il sera peut-être donné à nouveau – mais si vous regardez sur ce site, il y a toujours des MOOC libre d’accès et gratuits.
Le séquençage du génome et ce que nous offre l’avenir
Résumé succint de la lecture d’un gène et sa traduction en protéine. Le français est très bien prononcé, donc un bon outil scolaire. Cette vidéo a été publiée par l’INSERM en 2017. Les introns et les exons, vous connaissiez?
In nuclear energy, we have two choices: fission, breaking up large atoms such as Uranium, and fusion: sticking together or fusing very small atoms such as Hydrogen. In grade 9, and 10 Science students learn about the basics of such energy. In History 12, students learn of the awful consequences of nuclear war.
Fission is the technology that was developed during the Second World War and wasn’t chosen for least pollution but to develop bombs and missiles. Fission could have been developed in a way greener fashion. Fusion is a hope for the future because of its lesser polluting by-products. After all we all know about the energy of the sun that is one great enormous fusion ball. I have put together a bunch of videos here to illustrate nuclear energy. I hope you will find them as interesting as I did.
VERITASERUM
The sun has been producing light for about five billion years but where does all its energy come from? The most common idea is that the sun is burning gas – like a giant fireball in the sky. If this were true, the sun would have gone out long ago. So how is the sun actually fuelling itself? It is converting its own mass into energy. By combining protons (the nucleus of hydrogen) into helium, it squeezes some mass into energy – 4.3 billion kg per second. It is Einstein’s famous E=mc^2 which gives us the quantitative relationship between mass and energy, where c is the speed of light.
MINUTE PHYSICS:
THE GREAT DISASTER OF TCHERNOBYL (FISSION) as prepared by Seeker
Consequences:
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UN VLOGUEUR SUISSE SUR LE NUCLEAIRE EN SUISSE: Vincent vidéos
