Water and oil, and some other simple fluids, respond in the same way to all levels of shear stress. These are termed Newtonian fluids, and their viscosity is constant for all stresses although it will vary with temperature. Under different stresses and pressure gradients, other non-Newtonian fluids exhibit patterns of behavior that are much more complex.
Scientists have revolutionized the field of quantum photonics by employing high-performance computing to analyze quantum detectors at an unprecedented scale.
Their innovative approach involves the tomographic reconstruction of experimental data, enabling rapid and efficient characterization of photon detectors. This development promises to enhance quantum research significantly, paving the way for advanced applications in quantum computing and communication.
Breakthrough in quantum photonics with high-performance computing.
Quantum squeezing is a method that sharpens precision by redistributing uncertainty within a system, already advancing technologies like atomic clocks. This concept promises even wider impacts as researchers work on applying it to more complex measurements.
Quantum squeezing is a technique in quantum physics that reduces uncertainty in one aspect of a system while increasing it in another. Imagine a balloon filled with air: when it’s untouched, the balloon is perfectly round. If you squeeze one side, it flattens in that spot but stretches in the opposite direction.
Similarly, in a squeezed quantum state, reducing uncertainty (or noise) in one variable, like position, causes increased uncertainty in a related variable, such as momentum. The total uncertainty remains the same, but redistributing it in this way allows for far more precise measurement of one of the variables.
A new all-optical switch uses circularly polarized light and an innovative semiconductor to process data faster and more efficiently in fiber-optic systems.
This technology facilitates significant energy savings and introduces a method to control quantum properties in materials, promising major advancements in optical computing and fundamental science.
Modern high-speed internet relies on light to transmit large amounts of data quickly and reliably through fiber-optic cables. However, when data needs to be processed, the light signals face a bottleneck. They must first be converted into electrical signals for processing before they can continue being transmitted.
MIT researchers have uncovered two additional pathways in the brain’s striatum that modulate traditional movement control pathways by influencing dopamine production.
These pathways, connected to the brain’s striosomes, may play a crucial role in decisions with strong emotional components, potentially altering our understanding of how motivation and movement are interconnected.
In the human brain, movement is coordinated by a region called the striatum, which sends signals to motor neurons. These signals travel along two main pathways: one initiates movement (“go”), and the other inhibits it (“no-go”).
U.S. government updates Traffic Light Protocol guidance to enhance cybersecurity information sharing and collaboration.
Discover how new research shows AMD and Intel processors remain vulnerable to speculative execution attacks.
A researcher has released a tool to bypass Google’s new App-Bound encryption cookie-theft defenses and extract saved credentials from the Chrome web browser.
The tool, named ‘Chrome-App-Bound-Encryption-Decryption,’ was released by cybersecurity researcher Alexander Hagenah after he noticed that others were already figuring out similar bypasses.
Although the tool achieves what multiple infostealer operations have already added to their malware, its public availability raises the risk for Chrome users who continue to store sensitive data in their browsers.
SAN FRANCISCO – Austrian space domain awareness startup iSEE Global established a U.S. subsidiary in Arlington, Virginia, led by former Kleos Space CEO Andy Bowyer.
The U.S. subsidiary of iSEE, which stands for Impact Space Expedition & Exploration Global Corp., seeks “proximity to key government and defense customers, like the U.S. Space Force, and major commercial clients,” Bowyer told SpaceNews by email. “The U.S. is the biggest and most influential SDA [space domain awareness] market.”
Having a U.S. subsidiary will help iSEE “navigate the complex regulatory requirements,” Bowyer said.
WASHINGTON — The Defense Department should step up support of commercial space companies to take advantage of capabilities that might otherwise be lost, a new report concludes.
That recommendation is among several in a study called Space Agenda 2025 released Oct. 24 by The Aerospace Corporation and its Center for Space Policy and Strategy (CSPS). The report is intended to provide advice to the next administration on key topics in civil, commercial and national security space.
In a briefing held in advance of the report’s release, Sam Wilson, systems director at CSPS, said the Defense Department is benefitting from growing commercial capabilities in areas like commercial remote sensing, much of which was fueled by a boom in private investment in space companies several years ago. Private investment has dropped significantly since a peak in 2021, though, and investors say access to capital remains difficult for space companies today, especially those trying to raise larger, later rounds.
