Hi Tech & Innovation

Preventing vehicle crashes by learning from insects

Despite only about 25% of car travel happening after dark, almost half of fatal accidents occur at night. As our vehicles become more advanced and even autonomous, the ways of detecting and avoiding these collisions must ...

Computer Sciences

Tricking fake news detectors with malicious user comments

Fake news detectors, which have been deployed by social media platforms like Twitter and Facebook to add warnings to misleading posts, have traditionally flagged online articles as false based on the story's headline or content. ...

Machine learning & AI

Boxing body uses AI vetting of judges to restore trust

Seeking to restore trust in its bouts, the International Boxing Association (AIBA) used an artificial intelligence system to analyze judges and referees before they could work at the current men's world championships.

Automotive

Do autonomous driving features really make roads safer?

In recent years, more vehicles include partially autonomous driving features, such as blind spot detectors, automatic braking and lane sensing, which are said to increase safety. However, a recent study by researchers from ...

Consumer & Gadgets

Why do smoke alarms keep going off even when there's no smoke?

Editor's note: MVS Chandrashekhar is a professor of electrical engineering at the University of South Carolina. In this interview, he explains how smoke detectors work and why they sometimes sound an alarm for what seems ...

Machine learning & AI

Is AI-generated content actually detectable?

In recent years, artificial intelligence (AI) has made tremendous strides thanks to advances in machine learning and growing pools of data to learn from. Large language models (LLMs) and their derivatives, such as OpenAI's ...

Electronics & Semiconductors

Dark current modeling of thick perovskite X-ray detectors

X-ray detection is widely used in medical imaging, radioactivity detection, security checking, industrial flaw inspection, and so on. In recent years, metal halide perovskites have demonstrated excellent performances in the ...

page 2 from 3

Sensor

A sensor (also called detector) 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-in-glass 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, most sensors are calibrated against known standards.

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