Thought experiments and conservation laws: Reevaluating quantum conservation principles
Conservation laws are central to our understanding of the universe, and now scientists have expanded our understanding of these laws in quantum mechanics.
The Proceedings of the National Academy of Sciences of the United States of America, usually referred to as PNAS, is the official journal of the United States National Academy of Sciences (NAS). PNAS is an important scientific journal that printed its first issue in 1915 and continues to publish highly cited research reports, commentaries, reviews, perspectives, feature articles, profiles, letters to the editor, and actions of the Academy. Coverage in PNAS broadly spans the biological, physical, and social sciences. Although most of the papers published in the journal are in the biomedical sciences, PNAS recruits papers and publishes special features in the physical and social sciences and in mathematics. PNAS is published weekly in print, and daily online in PNAS Early Edition. PNAS was established by NAS in 1914, with its first issue published in 1915. The NAS itself had been founded in 1863 as a private institution, but chartered by the US Congress, with the goal to "investigate, examine, experiment, and report upon any subject of science or art." By 1914, the Academy was well established.
Conservation laws are central to our understanding of the universe, and now scientists have expanded our understanding of these laws in quantum mechanics.
A trio of biologists at the University of Colorado has found that dragonflies that cover themselves in a waxy coating fare better as the climate grows warmer and drier in regions where they live. In their study, published ...
A recent study conducted at Tel Aviv University has devised a large mechanical system that operates under dynamical rules akin to those found in quantum systems. The dynamics of quantum systems, composed of microscopic particles ...
General Physics
Mar 7, 2024
0
138
The 1986 disaster at the Chornobyl nuclear power plant transformed the surrounding area into the most radioactive landscape on Earth. Humans were evacuated, but many plants and animals continue to live in the region, despite ...
Plants & Animals
Mar 5, 2024
0
42
Blood relations and kinship were not all-important for the way hunter-gatherer communities lived during the Stone Age in Western Europe. A new genetic study, conducted at several well-known French Stone Age burial sites, ...
Archaeology
Feb 28, 2024
1
382
A team of biologists and natural resource specialists from Cornell University and Rensselaer Polytechnic Institute, both in New York, has found evidence suggesting that lake fish in some of New York's lakes are losing habitat ...
Researchers led by a University of California, Berkeley, comparative psychologist have found that great apes and chimpanzees, our closest living relatives, can recognize groupmates they haven't seen in over two decades—evidence ...
Plants & Animals
Dec 18, 2023
3
1599
Ancient bricks inscribed with the names of Mesopotamian kings have yielded important insights into a mysterious anomaly in Earth's magnetic field 3,000 years ago, according to a new study involving University College London ...
Archaeology
Dec 18, 2023
0
9062
A team of astronomers and astrophysicists affiliated with several institutions in China, working with one colleague from Centro Ricerche Enrico Fermi, in Italy, and another from the University of Utah, in the U.S., has found ...
Two teams of economists have conducted economic assessments of mining asteroids—one of them is a trio with one member each from the University of Tor Rome Vergata, the University of Maryland and Middlebury College. They ...