Warm air rises, but it also expands because air pressure decreases with height. The latter effect wins out and air becomes ...

Solar summer features the year’s most intense stretch of sunshine—setting up summer’s heat and even some ugly burns ...

Radiation is the transfer of heat energy from a region of high temperature to a region of low temperature by infrared radiation. Unlike conduction and convection, radiation takes place without the ...

A thin film from the MIT laboratories reacts to heat radiation. This can be used to make lightweight night vision goggles or ...

Light, heat, radio transmissions, and medical X-rays may not seem all that similar, yet they are all forms of electromagnetic radiation—waves moving through space (not just outer space ...

Scientists consider it the gold standard for evaluating how heat harms the human body ... new risks even for people who escape the sun’s radiation. By 2050, 1.3 billion people will be exposed ...

However, despite their name, radiators actually transfer most of their heat to a room by convection, not radiation. Normally radiant heaters must be at least red hot before they are effective.