Most Americans believe science and religion are incompatible, but a recent study suggests that scientific engagement can actually promote belief in God.
Jul 18, 2019
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In the wake of the COVID-19 pandemic, the U.S. Centers for Disease Control and Prevention recommends that people wear masks in public. Because N95 and surgical masks are scarce and should be reserved for health care workers, ...
Apr 30, 2020
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Together with researchers from the University of Nantes and the University of Reims Champagne-Ardenne in France, experts from the National Research Nuclear University MEPhI have recently developed a quantum dot-based microarray ...
Oct 19, 2018
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With SARS-CoV-2 variants continuing to evolve, building scientists and air quality specialists have assessed the ventilation rates of rooms required to keep the risk of infection under one percent, concluding that omicron ...
Nov 3, 2022
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In order to maintain cellular homeostasis (i.e., a state of equilibrium), cells undergo selective autophagy or self-degradation of unwanted proteins. Autophagy receptors control this process, by mediating the selection of ...
Jul 1, 2022
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You might remember how Gwyneth Paltrow's health and well-being website Goop was selling "medical" products with no proven measurable health benefits.
Nov 22, 2019
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Multiple system atrophy (MSA) is a neurodegenerative disorder characterized by the aggregation of α-synuclein in the brain. Now, scientists from Japan, in collaboration with three pharmaceutical companies, have developed ...
Aug 30, 2022
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Tracing the metabolism of tumor cells using magnetic resonance imaging (MRI) has not been feasible in routine clinical settings hitherto. Now, an interdisciplinary research team including the Technical University of Munich ...
Nov 10, 2022
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Over the past two years, scientists have studied the SARS-CoV-2 virus in great detail, laying the foundation for developing COVID-19 vaccines and antiviral treatments. Now, for the first time, scientists at the Department ...
Sep 8, 2022
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Scientists at the Campus Vienna Biocenter (Austria) have found a way to overcome some of the limitations of light microscopy. Applying the new technique, they can record the activity of a worm's brain with high temporal ...
Sep 9, 2013
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In physics, a quantum (plural: quanta) is an indivisible entity of a quantity that has the same units as the Planck constant and is related to both energy and momentum of elementary particles of matter (called fermions) and of photons and other bosons. The word comes from the Latin "quantus", for "how much." Behind this, one finds the fundamental notion that a physical property may be "quantized", referred to as "quantization". This means that the magnitude can take on only certain discrete numerical values, rather than any value, at least within a range. There is a related term of quantum number.
A photon is often referred to as a "light quantum". The energy of an electron bound to an atom (at rest) is said to be quantized, which results in the stability of atoms, and of matter in general. But these terms can be a little misleading, because what is quantized is this Planck's constant quantity whose units can be viewed as either energy multiplied by time or momentum multiplied by distance.
Usually referred to as quantum "mechanics", it is regarded by virtually every professional physicist as the most fundamental framework we have for understanding and describing nature at the infinitesimal level, for the very practical reason that it works. It is "in the nature of things", not a more or less arbitrary human preference.
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