Controlling light is an important technological challenge—not just at the large scale of optics in microscopes and telescopes ...

An introduction to Coulomb’s Law and electric fields explained in a clear and simple way. Learn how electric charges interact, how force depends on distance, and how electric fields describe these ...

Researchers built autonomous robots the size of salt grains—with onboard computers, sensors, and motors that think and swim ...

Liquids and solutions may look simple, but on the molecular scale they are constantly shifting and reorganizing. When sugar dissolves in water, each sugar molecule quickly becomes surrounded by fast ...

We take photos faster than ever, with research suggesting around 1.8 trillion are snapped worldwide each year—about 5 billion a day. But how many of those are just throwaway selfies or random ...