High-order harmonic generation from atoms ionized by femtosecond laser pulses has been a promising approach for the development of coherent short-wavelength sources. However, the realization of a ...

Physics of Sound Harmonics and The Unified Theory Theoretical physicist Brian Greene, best known for his work on string theory, explains how music might have the answer we need to find a unified ...

Nudge something away from where it was at rest, and often it will push back. And then overshoot. From atoms to bridges to wheeled luggage, much of the world is in simple harmonic motion Yesterday my ...