Energy & Green Tech
Since the ancient Greeks, humankind has known that if you bring two things into contact, a small amount of electricity is created. One example is that we can rub a balloon with our hair and generate enough electricity to ...
Jan 27, 2023
0
183
Business
IBM will slash some 3,900 jobs, slightly more than one percent of its workforce, related to businesses it has divested, a source close to the matter told AFP on Wednesday.
Jan 26, 2023
0
3
Computer Sciences
In quantum computers and other experimental quantum systems, information spreads around the devices and quickly becomes scrambled like dice in a game of Boggle. This scrambling process happens as the basic units of the system, ...
Jan 25, 2023
0
8
Computer Sciences
A team of researchers affiliated with a host of institutions across China has modified Shor's algorithm in a way that could allow less powerful quantum computers to crack current cryptosystems. The team describes their modifications ...
Computer Sciences
Sensing systems are becoming prevalent in many areas of our lives, such as in ambient-assisted health care, autonomous vehicles, and touchless human-computer interaction. However, these systems often lack intelligence: they ...
Dec 30, 2022
0
63
Energy & Green Tech
The past two decades have seen drastic progress in the development of semiconducting metal-halide perovskites (MHPs). The excellent optoelectronic properties and device performance make perovskites very attractive in various ...
Dec 14, 2022
0
3
Computer Sciences
Researchers at Tohoku University, the University of Messina, and the University of California, Santa Barbara (UCSB) have developed a scaled-up version of a probabilistic computer (p-computer) with stochastic spintronic devices ...
Dec 7, 2022
0
93
Computer Sciences
Computers help physicists solve complicated calculations. But some of these calculations are so complex that a regular computer is not enough. In fact, some advanced calculations tax even the largest supercomputers. Now, ...
Nov 15, 2022
0
107
Telecom
NIST, in collaboration with CU Boulder faculty, published a paper titled: "RF Josephson Arbitrary Waveform Synthesizer with Integrated Superconducting Diplexers" demonstrating results that show a significant step toward a ...
Nov 11, 2022
0
114
Energy & Green Tech
As climate change intensifies summer heat, demand is growing for technologies to cool buildings. Now, researchers report in ACS Energy Letters that they have used advanced computing technology and artificial intelligence ...
Nov 2, 2022
0
88
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.
This text uses material from Wikipedia, licensed under CC BY-SA
