Scientists are testing a novel way to measure cosmic expansion using time delays in gravitationally lensed quasars. Their ...

Recently in my physics lab, students were having trouble with the difference between mass and weight. I had ready answers---it’s a topic I’ve gone over hundreds of times. But after I explained that ...

It’s a powerful technique, but small uncertainties at each step can add up, something critics argue may be behind the Hubble ...

During the mid- to late-twentieth century, quantum physicists picked apart the unified theory of physics that Einstein’s theory of relativity offered. The physics of the large was governed by gravity, ...

Uncertainty affects the accuracy with which measurements can be made in quantum physics. To reduce this uncertainty, physicists have learned to "squeeze" certain measurements. Researchers are now ...

This morning on BBC Radio 4, the mathematician Roger Penrose, physicist Basil Hiley, and philosopher Simon Saunders had a lively discussion about the “measurement problem in physics” with broadcaster ...

Linear measurement tools are essential for determining the dimensions of an object. These tools provide a way to quantify distance in a straight line. In engineering and physics, getting your ...

Why does lead behave so differently from every other atomic nucleus when struck by electrons? A team of physicists at ...

Quantum computation is a promising and fruitful area of research, and impressive theoretical and experimental achievements have been reported in recent years. At the same time, many fundamental ...