More insight into static electricity please..?

When a piece of clothing that has just came out of the dryer is held close to your arm, the hair on your arm will stand up. Why does this happen?

More insight into static electricity please..?

Interesting, I never thought to actually think about why that happens.

But, we know that the clothing has a charge on it when it comes out of the dryer. So, I don't think you're all that interested in how the charge gets on the clothing, but it will end up having to do with the heat and rotation (ie, friction), as well as some of the more ancient ideas (such as rubbing a silk cloth over a glass rod gives a charge on the silk).

Anyways, you've got some charged clothing and decide to bring it close to your arm. The hair on your arm is naturally neutral, but is of course made up of electrons and protons at a quantum scale. The clothing will polarize your hair, meaning that the neutral hair is now, say, positively charged at the tip and negatively charged toward the skin. The net charge is still zero, however. Now that your hairs are polarized, there's an attraction between the tip and the clothing, which in this example would be negatively charged. Thus, your hair stands up -- it is experiencing a force from the charged clothes.