110 histórias, 110 objetos (110 anos do Técnico)

It’s probably older than Técnico. This electromagnet was created at the beginning of the 20th century and reproduces an experiment discovered in a London laboratory at the end of the previous century. It was the first demonstration of the interaction of a magnetic field with light, known as rotation or the Faraday effect. Almost a century later, it would have unforeseeable consequences in the field of microwaves and would allow millions of people to listen to music or watch movies with CD and DVD players. The experiment that paved the way for all this can still be replicated today at the Faraday Museum, at Técnico – Alameda campus.

• Acknowledgements:
  Carlos Ferreira Fernandes
  Moisés Piedade
  Museu Faraday

Episode only available in Portuguese in: Spotify | Apple Podcasts | Anchor.fm

Further reading and additional audio in the Portuguese version of this webpage.