Sometimes you see people driving over speed bumps one tire at a time. Like this: driver's side wheel, then passenger side wheel, and same with the back wheels.Is there a reason for this, or are they just having fun?
All of the above answers are correct. The lightning strikes the lightning rod and flows through wires into the earth where it is harmlessly distributed. However, most people don't realize that the lightning rod (invented by Ben Franklin) actually prevents lightning from striking at all. The lightning rod comes to a small point at the top. That point has a very low capacitance and will transmit electrons with a low electric field, essentially sucking the charge out of the air before it gets strong enough to ionize the air. Sometimes, there is so much energy in the air that it still ionizes, allowing the massive quantity of electrons to flow through it that you see in a lightning strike. When that happens, it will strike the lightning rod, as that is the path of least resistence to the ground. Franklin also created a lightning warning system. When a little bit of electricity flows through the rod, it would magnetize a bell, which would ring, letting the people inside know that the system was trying to stop a lightning bolt, but it may not be successful and lightning may strike shortly.
Lowes has them. Walmart has them, should be in the painting section with the strippers and gloves. Any auto parts store should have them also.
