Engineering

Liquid metal sensors and AI could help prosthetic hands to 'feel'

Each fingertip has more than 3,000 touch receptors, which largely respond to pressure. Humans rely heavily on sensation in their fingertips when manipulating an object. The lack of this sensation presents a unique challenge ...

Business

Spending in mobile apps surges to new high: survey

App revenue from mobile phone users around the world climbed to new heights in the first half of this year, nearly reaching $65 billion, market tracker Sensor Tower said Monday.

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Sensor

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.

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