How do vacuum cleaners work? 4 factors!

Vacuum cleaners are among the handiest household cleaning appliances used today. Vacuum cleaners’ simple yet effective design has done away with having to clean dust and other small particles off surfaces by hand, and turned house cleaning into a more efficient and fairly rapid job. Using nothing but suction, the vacuum whisks away dirt and … Continue reading How do vacuum cleaners work? 4 factors!

The Mpemba effect: why hot water freezes faster than cold

The Mpemba effect:  under the right circumstances, hot water can freeze more quickly than cold. This mystery has puzzled thinkers since Aristotle, but a team of Spanish physicists worked out how and why this seeming paradox can occur. The answer, as described in a 2017 paper in Physical Review Letters by Antonio Lasanta of Charles … Continue reading The Mpemba effect: why hot water freezes faster than cold