Spoiler alert - people inside vehicles...
... should have been protected from the EM radiation. Faraday cage and all...
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MovieChat Forums > War of the Worlds (2020) Discussion > Spoiler alert - people inside vehicles.....
you're both wrong.
- all cages , including faraday ones, have holes in them , otherwise they'd be boxes
- Farady cages are not for protecting against EMF , they are for voltage
also humans arnt affected by EM, so put that down to scriptwriters just picking random sciency words.
Cars do work very well as faraday cages when used as a faraday cage is meant to be used - like when they get struck by lightning
Actually, Faraday cages protect against EMP, which is a pulse in the EMF field. That pulse creates a wave of sudden increase in voltage between close points in space.
A Faraday cage doesn't isolate the inside from the magnetic field, but it prevents variations in the electric one. Since both fields linked, preventing sudden variations in the electric one would prevents variation in the EMF as a whole due to the voltage differences in the outside of the cage. In practice, you would have a magnetic field inside the Faraday cage, but it wouldn't suffer any sudden variation due to the pulse.
As a guess, I think that the cage would be useless against the EMP if the size of the cage was smaller than the wavelength of the pulse, but that's rarely the case.
The EMP pulse was designed to interfere with neurons and was very powerful. The cars were insufficient as caging.
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