Magnetic Eraser??? Hi, My friend and I were arguing about this the other day and I wanted some input from you guys: How many teslas would it take to potentially harm a computer. In the lab we use a .155Tesla magnet to move encased objects around in our rutherford scattering lab. I said that the magnet was not nearlly strong enough to harm a computer even if you put it right on its caseing. He said that even small magnets like fridge magnets could potentially harm a computer if waved around the caseing. He said the induced current would damage transformers. I differed saying that the induced current would be much to small and would have little effect even from the bigger 0.155 tesla magnet we were using. Thanks for your input!!!