Nuclear clock technology enables unprecedented investigation of fine-structure constant stability

In 2024, TU Wien presented the world's first nuclear clock. Now it has been demonstrated that the technology can also be used ...
Wired

You Can Measure This Fundamental Quantum Constant Using LEDs

Planck's constant is one of the fundamental constants that sets up all the "rules" for how things work in our universe. (It’s named after the theoretical physicist Max Planck, who is best known for ...

Memristors achieve stable resistance values tied to fundamental constants of nature

Researchers at Forschungszentrum Jülich, together with international collaborators, have demonstrated for the first time that ...
Symmetry Magazine

The 9 percent difference

A discrepancy between different measurements of the Hubble constant makes scientists question whether something is amiss in our understanding of the universe. Few numbers have gotten under astronomers ...
Journalism in the Americas

Improved Method for Estimating the Hubble Constant with Gravitational Waves

There’s a big debate in cosmology about how fast the universe is currently expanding. The collision of two neutron stars in 2017, seen in an artist's rendering, created both gravitational waves and ...
AZOM

Measuring the Dielectric Constant in Thin Films

The introduction of several new dielectric materials for high-speed ultra-large-scale integration (ULSI) microelectronics has increased the necessity for metrology tools to measure the ...
Scientific American

Mysterious Constant That Makes Mathematicians Despair

Mathematicians attended Roger Apéry’s lecture at a French National Center for Scientific Research conference in June 1978 with a great deal of skepticism. The presentation was entitled “On the ...
Ars Technica

Fine structure constant may vary with space, constant in time

One of the most exciting prospects in physics has been discovering that fundamental constants are not actually constant at all. When I first started writing, physicists and astronomers were just ...
Scientific American

Physicists Achieve Best Ever Measurement of Fine-Structure Constant

Researchers at the Kastler Brossel Laboratory in Paris have made the most precise measurement of one of the fundamental constants, called the fine-structure constant, providing physicists with a vital ...
Hackaday

How Fast Is The Universe Expanding? The Riddle Of Two Values For The Hubble Constant

In the last decades, our understanding of the Universe has made tremendous progress. Not long ago, “precision astronomy” was thought to be an oxymoron. Nowadays, satellite experiments and powerful ...
Princeton University

Princeton astrophysicists are closing in on the Hubble constant

Exactly how fast is the universe expanding? Scientists are still not completely sure, but a Princeton-led team of astrophysicists has used the neutron star merger detected in 2017 to come up with a ...