J'ai un devoir à faire en anglais mais les questions 1 et 3. Malgré leur simplicité je n'y arrive pas. J'ai répondu de la manière la plus simple possible mais le prof me dit que ce n'est pas bon.
Quelqu'un peut m'aider ? Je suis désespérée.
Quelqu'un peut m'aider ? Je suis désespérée.
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Réponse :
1) This document is the extract of the novel Curie and Radioactivity from Paul Stathern. This extract underlines that Röntgen discovered X-Rays. After that, Becquerel tried also to « make » X-Rays with fluorescent materials. But he finally discovered something new, accidentally, which make him wonder a new form of radiation.
3) Becquerel accidentally discovers radioactivity while researching the fluorescence of uranium salts.
Bon courage pour la suite :)