Buried deep below the American Midwest, a new kind of observatory is taking shape that aims to watch some of the most elusive particles in the universe as they stream straight through Earth. The Deep ...

Albert Einstein and Niels Bohr had an ongoing rivalry about the true nature of quantum mechanics, and came up with a thought ...

The constancy of the speed of light is a pillar of modern physics, but questions persist about its absolute universality.

Scientists have taken a major step toward solving a long-standing mystery in particle physics, by finding no sign of the ...

Physics experiments have changed the world irrevocably, altering our reality and enabling us to take gigantic leaps in technology. From ancient times to now, here's a look at some of the greatest ...

Just over a week ago, European physicists announced they had measured the strength of gravity on the smallest scale ever. In a clever tabletop experiment, researchers at Leiden University in the ...

If you drop a light object and a heavy object from a tower, which one reaches the ground first? As you may recall from high school physics, this is a trick question. Neglecting air resistance, they ...

The most beautiful experiment in physics, according to a poll of Physics World readers, is the interference of single electrons in a Young’s double slit. Robert P Crease reports Simply beautiful – the ...

Physicists have certainly achieved a lot, but many mysteries about the universe remain. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Paul M.

Abstract: Materials are made of atoms, atoms are made of nuclei and electrons, and the speed of light is the universal speed limit. How did humanity learn that this is true? Largely from brilliantly ...