MADISON — What if the speed of light is a constant only most of the time? What if gravity sometimes pushed instead of pulled? Scientists are increasingly asking what would seem like far-out questions ...

The Doppler effect can be heard particularly clearly when a train passes by. The presence of the same effect in the generalised telegraph equation indicates the wave nature of heat transport over ...

Doppler ultrasound blends physics and medical imaging to reveal the movement of blood through vessels and the heart. From diagnosing clots to assessing heart valve function, it’s a non-invasive tool ...