WASHINGTON/BEIJING (Reuters) - The United States said on Monday it still did not know the origin or purpose of three aerial objects that its military shot down over the weekend, as Washington and ...

Learn how tension and friction interact when an object moves at constant velocity. This video breaks down the force balance, explains why acceleration is zero, and shows how physics principles apply ...

Moiré pattern evolution. Courtesy: Andrea Silva and Xin Cao. If you’ve ever struggled to shift a heavy piece of furniture, you have probably noticed that rotating the furniture while pushing it makes ...

(Nanowerk Spotlight) Life as we know it is dominated by friction, the interaction between moving objects. Friction controls our everyday lives, from letting us walk to work, to holding a cup of tea.

Milwaukee | In the field of nanotechnology, where devices are one-billionth the size of everyday objects, friction - the resistant force of two objects rubbing together - is preventing some of these ...

Chemists and physicists shed light on a crucial aspect of friction: how things begin to slide. Using fluorescence microscopy and dedicated fluorescent molecules, they are able to pinpoint how and when ...

The United States said on Monday it still did not know the origin or purpose of three aerial objects that its military shot down over the weekend, as Washington and Beijing traded accusations about ...