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Question:

Can an Electric Field Penetrate Paper, Plastic, or Aluminum?

This is a question on a physics lab that i am having trouble withThe Electric field is produced by rubbing a balloon with wool if that helps.Thanks

Answer:

Yes, it doesIf you are using a pattern, it should tell you or you can go to a shop and talk with a sales person.
Oh, yes, most definitely! While you can use any hook with any thread, you will not get a fabric that is of any useThe hook should go with the size of the yarn usedThe general rule is that the thickness of the hook should be about the thickness of two threads held togetherIf the hook is smaller, you are going to get a very thick and stiff fabric, and you are going to really struggle trying to make the stitchesIf the hook is larger, you will get a looser more open fabric, which will have lots of drape, no body, and sometimes can be just too weak to be of any use at allThe right size hook will give you exactly the fabric you needNow, there is more to this than just the hook sizeWe all hold the yarn with more or less tension than others, so the fabric is going to reflect thatThere is no one size of hook that will work for everyone with any particular yarn - despite what the manufacturer will try to tell you! You need to do a lot of samples until you know your own tension, and then you will have a lot more experience knowing that this size yarn needs this size hook for this projectFor a scarf, you will want a looser fabricFor a sweater, something a little firmerFor socks, you want a fairly tight fabric so it wears longerAnd all this with the same yarn! While the needle listed on a ball band is only a suggestion, you have to decide what size is best for you, for this projectThat is why we always need a whole rack of different hooks - we can never have too many, you know! Oh, and then there is wooden, or steel, or plastic, or bone.
Electric fields can generally penetrate insulators like plastic and paper, but aluminum is a conductor.? Conductors form equipotential surfaces and the electric field inside a closed equipotential surface is zero.

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