Blood-Powered Devices

Blood-Powered Devices

Nearly all our electricity comes from mechanical energy; a flow of liquid or gas passes a propeller or similar device, which spins magnets in a coil of wire to produce an electrical current. This is the basic technology behind hydroelectric, coal, gas, nuclear, and... Read More...

MRI scans are one of many modern medical miracles; they let healthcare professionals create 3D images of the insides of a patient’s body. The technology is not without its risks and limitations, however. The acronym stands for Magnetic Resonance Imaging; strong... Read More...
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