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Physicists Are Close to Producing Metallic Hydrogen, And It Could Change Everything

The implications of the discovery of hydrogen in a metallic form make it a subject of great fervor. Teams are racing toward its use as a superconductor as well as a means of better understanding the universe.

The simplest and most common element, first in the periodic table, shouldn’t be difficult to crack, right? “What could be more simple than an assembly of electrons and protons?” asks Neil Aschcroft, a theoretical physicist at Cornell University. Yet, its supposed metallic form is quite the opposite. Apparently, the physics of hydrogen becomes more complex at high pressures. A sort of mega-evolution.

Hydrogen is naturally at a gaseous state, at room temperature and under atmospheric pressure. But hydrogen becomes solid, given enough of a forceful squeeze or at low temperatures. It also can transform into a liquid, if heat is added while squeezing. What is more confounding is the supposed ability of hydrogen, theoretically, to transform into metal if more extreme conditions are applied.

New Laser Provides Ultra-Precise Tool for Scientists Probing the Secrets of the Universe

WASHINGTON — Researchers have developed a new laser that makes it possible to measure electron transition energies in small atoms and molecules with unprecedented precision. The instrument will help scientists test one of the bedrock theories of modern physics to new limits, and may help resolve an unexplained discrepancy in measurements of the size of the proton.

The team will present their work during the Frontiers in Optics (FiO) / Laser Science (LS) conference in Rochester, New York, USA on 17 −21 October 2016.

“Our target is the best tested theory there is: quantum electrodynamics,” said Kjeld Eikema, a physicist at Vrije University, The Netherlands, who led the team that built the laser. Quantum electrodynamics, or QED, was developed in the 1940s to make sense of small unexplained deviations in the measured structure of atomic hydrogen. The theory describes how light and matter interact, including the effect of ghostly ‘virtual particles.’ Its predictions have been rigorously tested and are remarkably accurate, but like extremely dedicated quality control officers, physicists keep ordering new tests, hoping to find new insights lurking in the experimentally hard-to-reach regions where the theory may yet break down.

Gravitation under human control? This proposal could transform physics

Produce and detect gravitational fields at will using magnetic fields, control them for studying them, work with them to produce new technologies — it sounds daring, but Prof. André Füzfa of Namur University has proposed just that in an article published in the scientific journal Physical Review D. If followed, this proposal could transform physics and shake up Einstein’s theory of general relativity.

At present, scientists study gravitational fields passively: they observe and try to understand existing gravitational fields produced by large inertial masses, such as stars or Earth, without being able to change them as is done, for example, with magnetic fields.

It was this frustration that led Füzfa to attempt a revolutionary approach: creating gravitational fields at will from well-controlled magnetic fields and observing how these magnetic fields could bend space-time.