This content is not available from your geographic area.
Log in

Les champignons magiques

S1 E5
·
2020
warning
Expires on: 

The British scientist Alexander Fleming cultivated bacteria and enzymes in Petri dishes. On his return from vacation, Fleming noticed the appearance of mould in his containers. A fungus was discovered that led to the production of a medication called penicillin.

Levels:
Secondary Grade 11 Grade 12
Subjects:
Science and technology Biology
Skills:
Self-Directed Learning Innovation Critical Thinking
French level:
B1: Threshold B2: Vantage
Subscription
play_circle

E16 : L'Or élastique

3 min 46 s
Les peuples d'Amérique utilisaient depuis longtemps la sève d'hévéa, aussi appelé le caoutchouc. Les Européens vont l'importer et essayer de maîtriser cette matière aux propriétés prometteuses.
Subscription
play_circle

E17 : Rien ne se perd, rien ne se crée, tout se transforme

3 min 51 s
At the end of the 18th century, Antoine de Lavoisier, mathematician and chemist, asserted that in all the reactions of these experiments: 'nothing is lost, nothing is created, everything is transformed' but he could not really prove it.
Subscription
play_circle

E18 : Ça coule, ça flotte

3 min 46 s
When the king of Syracuse gave Archimedes the task of proving that a crown was not made only of pure gold, Archimedes discovered in his bath that 'any body immersed in a liquid undergoes, on the part of the latter, a thrust exerted from the bottom upwards and equal in intensity to the weight of the volume of liquid displaced.&…
Subscription
play_circle

E19 : À la recherche de l'infiniment petit

3 min 42 s
Democritus already thought in ancient times that matter was composed of small and unbreakable particles which is termed 'atomos' in Greek . Thanks to Lavoisier and John Dalton, the notion of element and atom was defined.
Subscription
play_circle

E20 : L'électricité, c'est de la chimie

3 min 27 s
At the beginning of the 19th century, the battery had just been invented and it was thought that there were several types of electricity. Michael Faraday looked at the quantity of gas that emanated from water when a current was passed through it and thus defined the electrolysis of water. In 1833, he published his observations and…
    Levels:
    Secondary Grade 11 Grade 12
    Subjects:
    Science and technology Biology
    Skills:
    Self-Directed Learning Innovation Critical Thinking
    French level:
    B1: Threshold B2: Vantage