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Ultrasound of an unborn baby
Ultrasound is a medical imaging technique that uses high frequency sound waves and their echoes. The sound waves are above human hearing, and the echoes from the sound waves bouncing off tissue inside the body are turned into electrical pulses that can be put together into a digital image, such as this one of an unborn baby.
Rights: Private collection
Published:21 July 2007Size: 59.3 KB