Fourier Transform

A team of Japanese researchers has discovered significant properties of non-Fock states (iNFS) in quantum technology, revealing their stability through multiple linear optics and paving the way for advancements in optical quantum computing and sensing. Quantum objects, such as electrons and photo

A multi-institutional team of Earth scientists, meteorologists, geologists and volcanologists has developed a new theory to explain the nature of volcanic fountaining. In their project, reported in the journal Nature Communications, the group studied the 2021 eruption of the Fagradalsfjall volcano in Iceland, which produced what some have described as spectacular examples of volcanic fountaining.

Optical metrology, as a general-purpose metrology technique that uses light as information carriers for non-contact and non-destructive measurement, is fundamental to manufacturing, basic research, and engineering applications.

A collaborative research team led by Interim Head of Physics Professor Shuang Zhang from The University of Hong Kong (HKU), along with National Center for Nanoscience and Technology, Imperial College London and University of California, Berkeley, has proposed a new synthetic complex frequency wave (CFW) approach to address optical loss in superimaging demonstration. The research findings were recently published in…

Pythagoras first discovered that the vibrations of strings are drastically enhanced at certain frequencies. This discovery forms the basis of our tone system. Such natural vibrations ubiquitously exist in objects regardless of their size scales and are widely utilized to derive their species, constituents, and morphology. For example, molecular vibrations at a terahertz rate have become the most common fingerprints…

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In this blog we delve into the fascinating realm of Anti-Bot Biometric Protections and explore novel approaches to creating models that mimic human traits. We embark on a journey that combines heuristics, unsupervised machine learning, and innovative techniques to generate synthetic biometric data that accurately copy human biometrics.

Learn how WebGPU unlocks the power of the GPU for faster machine learning performance and better graphics rendering.

Experiments with applying Fourier transofrms to various plane-filling curves and patterns - GitHub - dmishin/fft-image-experiments: Experiments with applying Fourier transofrms to various plane-fil...

The heavy use of fossil fuels for driving industrial processes and human activities has resulted in increasingly excessive emissions of anthropogenic CO2 into our atmosphere, surpassing the 400 ppm level. This exceedingly high concentration of atmospheric CO2 has led to a series of negative consequences for our planet's climate system. However, CO2 can be a strategic carbon resource for synthesizing valued…

A temporal version of the famous experiment generates fringes in frequency rather than space

Materials scientists at Cornell have developed a method for better understanding the complex electrochemical reactions that occur at the interface of water and metal surfaces—an approach that will ultimately lead to better fuel cells and other electrochemical technologies.

Article URL: https://www.katjaas.nl/chirpZ/chirpZ.html Comments URL: https://news.ycombinator.com/item?id=34768201 Points: 1 # Comments: 0

Traditionally, active metasurface research has primarily focused on changing the dielectric constant and permeability of the substrate, which frequently results in resonance effect and ohmic loss. However, a reconfigurable metasurface based on mechanical deformation can avoid these problems. At the moment, though, mechanical reconfigurable metasurfaces represented by the MEMS and FIB-induced deformation processes…

In the mid-1980s, an enigmatic document began circulating in French mathematical circles. Entitled Récoltes et Semailles, it was a lengthy, philosophical and deeply personal tract from the elusive mathematician Alexander Grothendieck, by then living in self-imposed seclusion. Now published officially for the first time, Pierre Schapira casts a critical eye over the book and some notable omissions.

Sometimes it takes a book or a course (or explanation from a mentor) for a topic to finally click for you that you were struggling with for a long time.For me, it was Stanford's EE261 course that made Fourier Transform click for me. Here is the link: https://see.stanford.edu/course/ee261Similarly for deep learning it was fast.ai courses.For programming it was How to Design Programs at www.htdp.org. Comments URL:…

10/22/22 - Weather and climate simulations produce petabytes of high-resolution data that are later analyzed by researchers in order to under...

Hi all, I try to keep up to date with all the ML/ANN tech and of course Transformers/Attention as we know had a HUGE (from what I can tell) impact on language and (other seq2seq task ?)I see such great use/papers like FXNET using Fourier transform and other MLP mixer techniques to improve vision task. It would be super interesting to hear from say "Tesla" or other leading self-driving tech companies, how much have…

"To see a world in a grain of sand", the opening sentence of the poem by William Blake, is an oft-used phrase that also captures some of what geologists do.We observe the composition of mineral grains, smaller than the width of a human hair. Then, we extrapolate the chemical processes they suggest t...

Article URL: http://www.paradise.caltech.edu/~cook/Workshop/Physics/BaseStates.html Comments URL: https://news.ycombinator.com/item?id=32119273 Points: 1 # Comments: 0