1. If you laid all your bones out end to end on a tennis court, you'd be dead ...
Ok, seriously now!
2. If you see a lightning conductor being hit by lightning, it's broken because its purpose is to dissipate the charge in the clouds with its own charge. It takes the ionised particles in the cloud and supplies them with electrons so they're complete atoms without a charge
3.The Aurora can only be seen at the Earths poles, as this is where the Earths magnetic field is the strongest. As charged particles are affected by magnetic fields, the "cosmic rays" that are made up of charged particles are directed to the poles.
4. People who are very short sighted (about -5 diopteres or less) are far more likely to suffer from retinal detachment, as there is almost always a greater pressure in the eye, meaning the lining of the eye, particularly around the peripheral of the retina is much thinner than in an "ordinary" eye
5. Thomas Edison tried incredibly hard to get New York's electric system to be run with D.C. current, rather than the A.C. current Tesla suggested, even going to the extent of killing a circus elephant with A.C. current to show how dangerous it was. In the end A.C. current won out because it has a far better range, and can be used in transformers to step up and down the p.d. America went for a 60Hz system, whereas Europe went for a 50Hz system - the higher the frequency, the better, so in this sense America has a better electric system!
