From rain to flood

Extreme weather events such as thunderstorms, heavy rainfall and resulting floods, influence Earth and environmental systems in the long term. To study the impacts of hydrological extremes holistically—from precipitation ...

Soon, air pollution could be measured on every street corner

Air pollution is responsible for 550,000 premature deaths a year in Europe and 7 million worldwide, according to the WHO. Measuring it can be a challenge, however, as the equipment tends to be large and expensive. But soon, ...

Legislators: Boeing wanted to wait 3 years to fix Max flaw

Two key lawmakers said Friday that Boeing planned to delay fixing a nonworking safety alert on its 737 Max aircraft for three years and sped up the process only after the first of two deadly crashes involving Max planes last ...

Do sensors make infrastructure safer?

Simply driving down the road gives you a sense for the current state of our infrastructure: crumbling and in need of repair. Aside from retrofitting or replacing current infrastructure with new construction and materials, ...

It's alive! Researchers create innovative 'living' bridge

Engineers at the University of New Hampshire have designed a unique living laboratory on a heavily traveled iconic bridge which could change the way infrastructure is viewed. The Memorial Bridge, which links Portsmouth, New ...

Octopus-inspired wearable sensor

Wearable electronics that adhere to skin are an emerging trend in health sensor technology for their ability to monitor a variety of human activities, from heart rate to step count. But finding the best way to stick a device ...

How to explore inaccessible places by swarms of sensors

Since the dawn of humankind, exploration of certain places, ranging from the depths of the oceans to the edges of the universe, has led to numerous discoveries. However, there are also several environments that need to be ...

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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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