More information: Melina Filzinger et al, Ultralight Dark Matter Search with Space-Time Separated Atomic Clocks and Cavities, Physical Review Letters (2025). DOI: 10.1103/PhysRevLett.134.031001 ...

How packaging is used for the most expensive cigarette brands in dark markets has received limited attention however, even though these ‘premium’ cigarette brands significantly impact upon the ...

Pigment-specific laser technology generates green, red, or near-infrared light to selectively target intracellular melanosomes or tattoo pigment. Pigment-specific lasers are also used to eradicate ...

Using common materials (laser pointers, polarizing filters, and calcite), anyone can reproduce this experiment at home. If this sparks curiosity, explore Hackaday’s archives for quantum mechanics.

The body’s circadian rhythms are regulated by a “master clock” in the brain, whose tempo is set by light-dark cycles, while the peripheral clocks that control liver ... to watch both the SCN and ...

13, 212 (2022)], and from the atomic clocks aboard GPS satellites. By comparing precision measurements across vast distances, the analysis became sensitive to subtle effects of oscillating dark ...

DENVER, Colo. (KRDO) – A dozen of Colorado's state parks are now working to reduce light pollution and protect the night sky for stargazers by collaborating with a new dark sky program.