While x-ray imaging has been used for medical diagnoses for more than a century, scientists have not been able to precisely describe how light moves within nontransparent scintillators – the key ...

The universe has a speed limit, and it's the speed of light. Nothing can travel faster than light — not even our best spacecraft — according to the laws of physics. So, what is the speed of light?

Scientists show that the geometry behind light waves can affect how light moves and interacts inside materials. Their research explores the hidden geometry of light and reveals new connections between ...