A neuromagnetic view through the skull

The brain processes information using both slow and fast currents. Until now, researchers had to use electrodes placed inside the brain in order to measure the latter. For the first time, researchers from Charité - Universitätsmedizin ...

Biomedical technology

Tiny wireless implant detects oxygen deep within the body

Engineers at the University of California, Berkeley, have created a tiny wireless implant that can provide real-time measurements of tissue oxygen levels deep underneath the skin. The device, which is smaller than the average ...

Parkinson's & Movement disorders

Parkinson's disease: Wearable sensors to track symptoms

EPFL scientists have developed algorithms that, combined with wearable sensors, could help clinicians to monitor the progression of Parkinson's disease and assess the effects of medications commonly used by people with this ...

page 1 from 29


A sensor is a device that measures a physical quantity and converts it into a signal which can be read by an observer or by an instrument. For example, a mercury thermometer converts the measured temperature into expansion and contraction of a liquid which can be read on a calibrated glass tube. A thermocouple converts temperature to an output voltage which can be read by a voltmeter. For accuracy, all sensors need to be calibrated against known standards.

This text uses material from Wikipedia, licensed under CC BY-SA