Big Idea: Waves carry information without causing a permanent change on the intervening medium. More info...
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Pulse oximeters use red and infra-red light to monitor pulse rate and the oxygenation of a patient’s blood.
Ultrasound imaging systems uses piezoelectric transducers as source and detector.
X-ray imaging utilises the ability of high frequency electromagnetic waves to pass through soft parts of the human body...
Electrocardiograms (ECGs) record the activity of the heart through electrodes placed on the patient’s skin.
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