how do you access an blocked site at school?
well, lightning is simply positive and negative particles aligning in a way that electricity is created, thus creating lightning, and as for lightning rods, I suppose it doesnt matter whether its round or pointed, having it round just wastes metal I guess
Lightening is release of negatively and positively charges of static electricity. Positive charges build up at the top of the thunderstorm cloud while negative charges build up at the bottom of the cloud, the groung becomes positively charged and lightening flases between the cloud and the ground to discharge its electrical charge. (hope that answers your first question) i am not to sure on your 2nd question.
Lightning is what kicks your ss if your not careful. I really have no idea why rods needs to be pointed.
i have very fair skin and i get really bad sunburn, but i've never wrinkled before. so that's kinda weird. but when i get sunburn, i put aloe on like 50 times a day. aloe just helps it not peel. so keep putting on aloe. and when you do start peeling a little, don't peel it. just let it go. you can put lotion on it though.
As others have mentioned, lightning is caused by an electric buildup withing the clouds. Currently, no-one knows exactly how this happens, but there are many theories which try to explain it (some of which have been mentioned already). As the charges buildup, they tend to repel one another. Since the ground remains neutral, and so the charge will want to dump itself into the ground. However, it has no clear path, since the air is normally an insulator. Therefore, the charge continues to build until it becomes so great, that the electric field given off by the charges is strong enough to rip electrons off of the air molecules (ionizing them) and allowing electricity to flow through the air, which we see as 'lightning'. I've never heard of your second question before. But I would assume it has to do with something called 'corona discharge'. Chances are, the finer point would prevent any massive buildup of charge at the tip, and therefore would protect the rod from being melted as lightning tried to pass through it.
