Since electricity prefers to travel through lower density air, the spark moves in that direction. The ultrasound pulses move this hotter, lower-density air around, which in turn guides the ...

Of course air flow does not have to be supersonic to create density variations; subsonic wind tunnels can be equipped with schlieren optics as well. HVAC as you’ve never seen it before.

Microsoft is pioneering the use of waste heat to power Direct Air Capture (DAC) systems within its data center operations.

The boundary between the ocean and the atmosphere, where the air and sea interact, is known as the sea surface microlayer. Understanding how nutrients, pollutants and organic matter are exchanged ...