The Levoit Cordless Vacuum completely changed my perspective on cordless stick vacuums. It’s just as powerful as my upright ...

Forget what you think you know. Our lab tests reveal surprising links between battery life, price, suction and weight.

Every time Steven publishes a story, you’ll get an alert straight to your inbox! Enter your email By clicking “Sign up”, you agree to receive emails from ...

Abstract: A 3-D asymmetric model has been proposed to study the formation and development of copper cathode spots on different shapes of protrusions and the interaction with a nearby spot in a vacuum ...