THE recent spell of hot sunny weather in England made possible a series of experiments concerning the existence and magnitude of thermal convection currents in the air, arising from the reflection ...

In a sense, both deep-frying and air frying work through convection, but with different fluids: oil and air. And that’s a key difference, Keener says. The heat flux of deep-frying is around ...

In winter with the heating on, the radiators produce convection currents. Colder, denser air falls, displacing warmer air. If the thermostat records 20°C, the temperature at floor level will be ...