ptorrone writes: "In this 7 minute video we explore "The mysteries of Apple device charging". Usually device makers need to sign a confidentially agreement with Apple who want to say "works with iPhone / iPod" and never talk about how the insides work. If you don't put these secret resistors on the data lines to you get the dreaded "CHARGING IS NOT SUPPORTED WITH THIS ACCESSORY". We demonstrate how anyone can do this and make their own chargers that work with iPhone 4, 3Gs, etc."
Today's scientific question is: What in the world is electricity?
And where does it go after it leaves the toaster?
-- Dave Barry, "What is Electricity?"