A young handheld electronic scanner that can notice the presence of a cancerous tumor just by being waved over a person :
The gimmick , which looks a little like the metal detectors used in airports , works because different types of body tissue resonate in different way when expose to a fluctuating absolute frequency of microwaves given off by the machine . This resonance can be discover because it interferes with the signal . Tumour tissue paper vibrate at different frequencies to healthy tissue paper – so the comportment of a genus Cancer can be name quickly . Normally , a affected role would have to undergo a CT or MRI scan to permit medico to spot Crab raise inside them .
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word from the future tense , drive home to your present tense .
