It doesn’t happen often that I can find something relevant for two of my courses; but I have been teaching magnetic fields to my Year 13 class, while my Year 11 are looking at radioactivity and the Northern Lights.
So here is an interesting article about a bizarre 1950s experiment that could be interesting - it involved exploding nuclear bombs in outer space, so that a stream of charged particles would be produced travelling along the magnetic field of the Earth. This would create a radiation belt which would affect enemy satellites.
I have not been brave enough to watch the entire 45 minute video, but the diagram is really quite something… Oh, and for my newly-found bunch of foreign readers, if anyone is interested, more information in the usual place.
He recopilado una serie de problemas sobre campo eléctrico, a partir de algunas páginas web que ofrecen recopilaciones de ejercicios. Este es el documento completo, tal y como se os habrá entregado en clase. Se admiten preguntas, o incluso se puede usar este post para discutir dificultades con el tema.
La discusión de ayer en clase sobre el criterio de signos en el trabajo electrostático quedó pendiente, y prometí echarle un vistazo. Espero que la información encontrada en esta página pueda ser útil, prescindiendo de integrales. Resumiendo:
El trabajo realizado por el campo eléctrico sobre una carga positiva es positivo si la carga se mueve desde un punto de mayor potencial a otro de menor potencial.
El trabajo que debe realizar una fuerza externa sobre una carga positiva es positivo si la carga se mueve desde un punto de menor potencial a otro de mayor potencial.
Real Madrid Incapaz de Vencer - Un éXito Grandioso
This might be tomorrow’s headline after tonight’s match - but it is also a nice mnemonic to remember the electromagnetic spectrum in ascending order of frequency, which is the same as descending order of wavelength.
I am sure that you’ll crucify me in the comments if the result goes the other way… Can you find a better mnemonic?
Cinco minutos antes de ir a clase, encuentro estos dos applets que pueden ser útiles (aunque no consigo que el segundo me funcione correctamente, a ver cómo sale “en vivo”)
I was talking about the Electromagnetic Spectrum to my Triple Science class this morning, and we stumbled upon this video:
The challenge now is to make our own songs (no matter how silly) about any other Science items that come up in the course… any brave musicians out there?
Oh, and if you want to practise, here is the karaoke version…
It is time I showed my face up on the side... but I still won't! I hope you will join me on my multi-lingual, multi-subject discussion about my classes in Madrid. A teacher is a life-long learner.
Ya era hora de dar la cara en este rincón... pero sigo sin darla. Espero que me acompañéis en esta conversación políglota y multitemática sobre mis clases en Madrid. Aprendiz de todo, profesor de algo...
It is time I showed my face up on the side... but I still won't! I hope you will join me on my multi-lingual, multi-subject discussion about my classes in Madrid. A teacher is a life-long learner.
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