Once tied to a metal cylinder in France, the kilogram has now been redefined using the fundamental laws of physics.

"If you're using a counter, you have to define zero. You start counting at some point," physicist Marta Berholts from the University of Uppsala in Sweden, who led the team, explained to New Scientist ...

Can we reveal objects that are hidden in environments completely opaque to the human eye? With conventional imaging ...

The world’s best clocks may be sensitive to an odd mix of quantum and relativistic effects that would stretch time and test the boundaries of physics ...

She has helped robots learn to get around indoors and pick up balls from the ground. And she has developed computer programs ...

For centuries, scientific progress has depended on more precise tools for measuring the world around us. Galileo’s telescope ...

Stefan Hutzler and Louise Bradley explain how they turned the famous pitch-drop experiment into an outreach activity ...

Virtual particles may not be real, but they help physicists track how forces move, and allow for incredibly precise ...

Using newly developed mathematical methods, scientists found a way to detect the position of objects hidden in opaque ...

Imagine watching a favorite movie when suddenly the sound stops. The data representing the audio is missing. All that's left ...

Frustrated with the way Palo Alto schools taught math, Munger joined the state’s curriculum commission in 2003. He waded into ...