New atomic clocks are more accurate than those used to define the second, suggesting the definition might need to change ...

从古埃及的日晷到现代的原子钟，人类对时间测量的精度不断提升。而如今，光学钟的精确度已超越了当前以铯-133原子跃迁定义的“秒”。这引发了一个关键问题：我们是否应该重新定义时间的基本单位？本文将系统解析当前时间计量的框架、光学钟的革命性突破，以及重新定 ...

Using the X-ray Polarimetry Explorer (IXPE) and Neutron star Interior Composition Explorer (NICER), Indian astronomers have ...

The new era of nuclear power generation greater than the force of the Sun has arrived and is ready for deployment. For the first-time ever, a sustained synthetic quasar has been born on Earth to ...

Spectrometers are used worldwide under diverse climatic conditions. Their dependable performance relies on the integrated ...

This includes blackbody radiation, the heat emitted by surrounding objects. Blackbody radiation can cause electrons in Rydberg atoms to jump to even higher orbits. Rising temperatures increase the ...

Explore the impact of stellar flares on the potential for alien life. Discover how higher levels of UV radiation can both ...

The DRC illustrates how millions of people in fragile, violent and conflict-affected parts of the world are at risk of disaster.

Ethnoburbs — ethnic suburban enclaves — challenge assimilation and represent a form of resistance against the homogenizing pressures of American suburbia.

Researchers develop ultrafast, highly sensitive infrared detector using 2D materials, achieving performance comparable to ...