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Faraday Cage - Does it still work ???

1.9K views 26 replies 14 participants last post by  mgfnortheast  
#1 ·
Hmmmmm.....

Was thinking the other day whilst driving in the thunder and lightening - (yes yes - I know - thinking AND driving at the same time is dangerous :shake: - lol :rofl: :rofl: )

Does the faraday cage principle still apply to an MG ??

Has anyone tested it ?? :dunno: :hyper:
 
#2 ·
We were discussing this at work the other day (just as the building was struck by lightening) and we think if the hood is up then there would still be a Faraday cage but would not be as effective as a tin top.
 
#4 ·
A faraday cage won't conduct electricity inside it, so an enclosed metal box (IE a normal car) can be hit by lightning and you'll be safe inside.

The question is, as the F isn't completely enclosed, does the same effect apply?
 
#10 ·
lol so what your saying is we are basically sat in a circuit if we have the roof up and get struck by lightening we may be ok with the roof up ..but if the roof is down we are screwed..

lol that brings a whole new meaning to the hchdc
 
#13 ·
Electricity always takes the easiest route. Or the route of least resistance. How do you like that, electricity is lazy, I knew I liked it for a reason.

The electricity (lightning) hits the top most point of the car (roof) and travels through the skin, all around the car and exits through the tyres to earth.

As long as there is no high resistance or break in the circuit, and there is sufficient cross sectional area to carry the energy, then everything should be OK. The soft top hoops are metal and as long as they are successfully bonded to the chassis then they will act as a Faraday cage.

For all of you HCHDC, this may not apply as you were stupid enough to be driving around with your roof down.

It won't be as effective as a tintop, but it should still work.

James, your statement is not altogether true but it is nit picking. If the cars resistance is higher than yours, YOU will conduct. Or if the impedence of the Faraday cage (car) is not sufficient to disperse the energy safely, you could end up with a face full of lightning.

http://en.wikipedia.org/wiki/Faraday_cage

Faraday cages are normally used to shield Communications Equipment and delicate electronics. It can stop signals getting in, or out, so is used for security purposes as well.

Anybody want to drive to the Siemens test facility in Germany and try it out??
 
#18 ·
By the time there is thundering and lightening, it will probably be pouring in rain and you will be all wet by the time you put up your hood. Being all wet is as good as not putting the hood up.
You are screwed either ways! :lol:
 
#20 ·
Nope, sorry. It may increase your chance of a shock, but as long as the Faraday cage holds then you will be OK. You may catch a chill though.

Note of warning. Not a good idea to put your hood up WHILE it is thundering and lightning as YOU will form part of the Faraday cage, which is never good. Get the wife to do it.
 
#27 ·
They did this test on TopGear and bunged the hamster in a sierra next to a high voltage discharge. He was okay as long as he didnt touch the inside of the car and got away with it.

Unfortunately he then got into the jet car and luck ran out.