The researchers deployed a special quantum effect called the two-photon spin-exchange Auger process to produce hot electrons far more efficiently than before. This process allows two low-energy ...

New research is shedding light on what researchers call "lite" intermediate-mass black holes, which are smaller, but still ...

We propose and investigate a coherent terahertz scheme, which uses a free-electron beam to drive a set of closely patterned sub-wavelength holes. Each hole is an independent electromagnetic resonator ...

State-of-the-art perovskite–perovskite tandem solar cells incorporate a water-based poly(3,4-ethylenedioxythiophene):polystyrenesulfonate (PEDOT:PSS) hole transport layer in its low bandgap subcell.

Gravitational waves stretch and squeeze the fabric of space and time itself. When space/time is squeezed, pulsar pulses ...

Hints of the very first stars to light the Universe might be discovered in a faint radio signal feebly beaming from the dawn ...

LOFAR detects a faint radio 'mini-halo' from 3.8 billion years ago, revealing how galaxy clusters evolved in the early ...

In October 2023, cosmonauts Oleg Kononenko and Nikolai Chub were sent on a spacewalk that would quickly become one of the ...

xi, 155 pages : 23 cmPublication date 2005 Topics Black holes (Astronomy), Trous noirs (Astronomie), Schwarzes Loch, Zwarte gaten, Trous noirs (astronomie) Publisher London : Imperial College Press ...

An atom consists of a heavy center, called the nucleus, made of particles called protons and neutrons. An atom has lighter particles called electrons that you can think of as orbiting around the ...

Curious Kids is a series for children of all ages. If you have a question you'd like an expert to answer, send it to ...

However, although photons of light existed since the first second after the Big Bang, they could not yet shine across the ...