New findings suggest that ordinary sound has negative gravitational mass. This is an Inside Science story. (Inside Science) -- The sound of a sonic boom may produce about the same magnitude of ...

The mathematical physics underpinning electromagnetic fields and wave equations provides a rigorous framework for understanding the behaviour of electric and magnetic phenomena in both classical and ...

Wavelength is defined, and students use the wave equation to solve problems. Wavelength is defined, and students use the wave equation to solve problems. Reflection is described at boundaries of ...