Articles sur Heat

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Some materials and surfaces radiate much more heat (red areas) than others, as can be seen in this thermal image of Arncliffe Street in Wolli Creek, Sydney.

Building cool cities for a hot future

Hot spots occur at the scale of where people live – the building, the street, the block – which means urban design and building materials have profound implications for our health and well-being.
The cover that trees provide transforms cities into much more hospitable places, especially in hot weather. AAP/Joe Castro

In a heatwave, the leafy suburbs are even more advantaged

Six years after Black Saturday, it's worth remembering that heatwaves kill more people than bushfires do, so shade can be a life-saver. But tree cover and shade are not evenly distributed in cities.
Magnets have mysterious powers – now shown to influence heat and sound. Magnet image via www.shutterstock.com.

Magnetic fields can control heat and sound

Sound waves are made of particles called phonons. New research shows they're affected by magnetic fields, with researchers able to steer heat magnetically.

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