The phase and the group velocity of light propagating in conventional optical media cannot exceed the speed of light in ...

where electron frequency and wave frequency are both matched, driving greater energy transfer. "These electron holes associated with chorus waves have been well studied by simulations and have now ...

The results confirmed the original anomaly, but thanks to new nuclear theory calculations from researchers at TU Darmstadt, ...

One major category of the next generation of energy-efficient microelectronic devices and information processing technologies ...

the trio produced a significant improvement on previous two-loop calculations of the electron self-energy that reduces the 1S–2S Lamb shift in hydrogen by a frequency difference of 2.5 kHz and ...

For the first time, researchers have been able to measure the quantum state of electrons ejected from atoms that have absorbed high-energy light pulses. This is thanks to a new measurement technique ...

This means that each electron transition will produce a photon of a different frequency and hence a different colour. This causes line emission spectra to be produced, as shown below. This is not ...

find that peaks in the electron phase-space density are most ... along magnetic field lines induces a Doppler shift of the wave frequency, causing it to converge to the same frequency at which ...

A novel method transforms common liquids into epsilon-near-zero materials using femtosecond laser pulses, enabling unique ...