The alternative text for this image may have been generated using AI. Preliminary evidence of a regime of influence of the absolute phase on the emission of high harmonics of the laser radiation (that ...

Red supergiants are massive stars near the end of their lives, and are direct progenitors of core-collapse supernovae 7,8. They evolve from O- and B-type stars (hot, luminous sources of ionizing ...

Speed matters. When an X-ray photon excites an atom or ion, making a core electron jump onto a higher energy level, a short-lived window of opportunity opens. For just a few femtoseconds, before an ...

The idea that light can behave as both a particle and a wave is one of the strange central concepts in quantum mechanics known as wave-particle duality. Towards the end of the 19 th century and the ...

What lies within the H atom? Experimental observation of the transverse nodal structure of four atomic hydrogen Stark states. The images in the middle show experimental measurements. Interference ...

Sponsored by PittconReviewed by Danielle Ellis, B.Sc.Feb 12 2026 The idea that light can behave as both a particle and a wave is one of the strange central concepts in quantum mechanics known as ...