How Does an X-ray See Inside You?
The X-ray picture a doctor uses to see inside your body is really a shadow picture of your bones and organs. X-rays are a kind of invisible
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Electrons
How Does Electricity Travel Through a Wire?
How Does Electricity Travel Through a Wire? Electricity comes into our buildings on copper or aluminum wires from giant electric generators
How Does a Magnet Get Its Magnetism?
How Does a Magnet Get Its Magnetism? All things, including magnets, are made of tiny atoms. Atoms are made of even tinier particles, among t
How Can Birds Perch on Electric Wires Without Getting Shocked?
How Can Birds Perch on Electric Wires Without Getting Shocked? Birds don’t get shocked when they sit on electrical wires because they are
Why Do I Sometimes Get a Shock When I Touch a Doorknob?
Why Do I Sometimes Get a Shock When I Touch a Doorknob? The little shocks you can get by walking on a carpet come from what is called static