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Nist

All articles tagged with #nist

science1 month ago•6 min saved

NIST's decade-long hunt keeps Big G from settling on a single precise value

NIST researchers spent a decade replicating a Cavendish-style experiment to measure Big G, testing copper and sapphire masses with an electrostatic twist, and report G = 6.67387×10^-11 m^3/kg/s^2—about 0.0235% lower than the BIPM value. The result adds another data point but does not resolve the long-standing discrepancy, highlighting gravity’s weakness and Earth’s background noise as ongoing challenges — while advancing precision instrumentation and metrology.

via Ars Technica|

#big-g #gravitational-constant #metrology

physics1 month ago•6 min saved

Big G Remains Elusive as a Decade of Gravity Tests Clash with CODATA

After a decade of cross‑Atlantic replication led by NIST, the new measurement of the gravitational constant G disagrees with both the 2013 BIPM result and CODATA’s current value, highlighting that Big G is still the least precisely known fundamental constant and that the true value remains unresolved despite improved methods (including a blinded measurement to reduce bias).

via Nature|

#bigg #bipm #gravitationalconstant

science1 month ago•6 min saved

A Decade-Long Hunt Keeps Gravity’s Constant Unsettled

A decade-long effort by NIST to measure the universal gravitational constant G, using a torsion-balance setup and multiple test masses, produced a value of 6.67387×10^-11 m^3/(kg·s^2) that is 0.0235% lower than the BIPM's result, sustaining a small but persistent discrepancy among precision measurements. An unusual blinding step— a colleague secretly altered some data to hide the true result until the envelope reveal—meant Schlamminger only learned the outcome at the end. Although the difference is too small to affect everyday life, it keeps G as an open question and underscores the need for further, careful measurements.

via SciTechDaily|

#big-g #bipm #gravitational-constant

cybersecurity1 month ago•4 min saved

NIST narrows vulnerability scoring to high-risk issues as submissions surge

NIST will stop enriching and rating severities for low-priority vulnerabilities in the NVD due to a 263% rise in submissions; only CVEs meeting KEV criteria, affecting U.S. federal software, or involving critical software will receive added details, while all CVEs stay in the database and others are labeled Not Scheduled; enrichment requests remain possible via [email protected].

via BleepingComputer|

#cve #cybersecurity #nist

technology1 month ago•7 min saved

Quantum Time Bomb: Crypto Could Be Cracked Sooner Than We Realize

Advances in quantum hardware and algorithms are shrinking the resources needed to break common encryption, notably elliptic-curve cryptography; while no immediate catastrophe is expected, experts urge migration to quantum-safe cryptography, with standards bodies like NIST aiming for widespread adoption by the mid-2030s and some regions piloting early post-quantum protections today.

via ScienceAlert|

#cryptography #elliptic-curve-cryptography #nist

technology3 months ago•4 min saved

NIST kicks off security-first standards drive for autonomous AI agents

NIST launches the AI Agent Standards Initiative through its CAISI to develop industry-led standards and protocols that build public trust and enable an interoperable, secure ecosystem for autonomous AI agents. The effort includes an RFI on AI agent security due March 9 and a draft concept on software/AI agent identity and authorization due April 2, reflecting growing adoption of AI agents and ongoing concerns about safety and security across industries.

via Federal News Network|

#agentic-ai #ai #ai-standards

science5 months ago•2 min saved

Colorado Windstorm Disrupts U.S. Official Time by Microseconds

A power outage at NIST in Boulder caused a disruption in atomic clock operations, affecting internet time servers globally. Backup systems were activated, restoring accurate time within nanoseconds, but the incident highlights the critical role of atomic clocks in modern technology like GPS and financial systems.

via WRAL|

#atomic-clock #colorado-fire-weather #internet-disruption

technology5 months ago•3 min saved

NIST and Partners Advance AI Security in Critical Infrastructure

NIST is investing $20 million to establish two centers in collaboration with MITRE to advance AI technology solutions in U.S. manufacturing and critical infrastructure cybersecurity, aiming to strengthen American leadership and innovation in AI.

via National Institute of Standards and Technology (.gov)|

#ai #cybersecurity #innovation

science5 months ago•2 min saved

Boulder Power Outage Disrupts Atomic Clock, NIST Assures Time Integrity

A power outage caused by preemptive shutdowns in Boulder temporarily affected the NIST F-4 atomic clock, resulting in a minimal 4 microsecond drift in time measurement, but the system's redundancies ensure no significant impact on global timekeeping or critical industries.

via CBS News|

#atomic-clock #boulder #nist

technology5 months ago•3 min saved

NIST Develops New Cybersecurity Guidelines for AI Security

NIST has released a draft of its Cyber AI Profile to guide organizations in securely adopting AI by focusing on securing AI systems, enhancing AI-enabled cyber defense, and preventing AI-driven cyberattacks, with public feedback sought to refine the framework.

via National Institute of Standards and Technology (.gov)|

#ai-cybersecurity #ai-risks #cyber-ai-profile

technology9 months ago•4 min saved

NIST Launches Standard for Lightweight Cryptography in Small Devices

NIST has finalized a new lightweight cryptography standard based on Ascon algorithms to protect small, resource-constrained devices like IoT gadgets, RFID tags, and medical implants from cyberattacks, offering various options for encryption, hashing, and future expandability.

via National Institute of Standards and Technology (.gov)|

#ascon-algorithms #cybersecurity #iot-security

science10 months ago•4 min saved

Global Breakthroughs in Atomic Clocks Redefine the Second with Unprecedented Precision

NIST has developed the most precise atomic clock using aluminum ions, measuring time with unprecedented accuracy to the 19th decimal place, which could revolutionize scientific research, quantum technology, and geodesy.

via Rude Baguette|

#atomic-clock #nist #precision

science10 months ago•5 min saved

Global Team Unites Ultra-Precise Clocks to Redefine the Second

Researchers at NIST have developed the most precise atomic clock using aluminum ion technology, achieving 19-decimal accuracy and surpassing previous records in stability and accuracy, with potential applications in redefining the second, geodesy, and quantum physics research.

via Phys.org|

#aluminum-ion #atomic-clock #nist

science10 months ago•6 min saved

Global Collaboration Achieves Unprecedented Precision in Redefining the Second

Researchers at NIST have developed the most accurate atomic clock based on a trapped aluminum ion, achieving 19 decimal places of accuracy and surpassing previous records by 41%. The clock's enhanced stability and precision are due to improvements in the ion trap design, vacuum chamber, and laser stability, enabling new scientific research and potential redefinition of the second.

via National Institute of Standards and Technology (.gov)|

#accuracy #ion-clock #nist

science11 months ago•6 min saved

Quantum Entanglement Enables Truly Random Number Generation

Researchers at NIST and the University of Colorado Boulder have developed a public, verifiable quantum random number generator called CURBy, which uses quantum nonlocality and Bell tests to produce truly random numbers that are certifiable and traceable, marking a significant milestone in the use of quantum physics for secure and unbiased randomness generation.

via Phys.org|

#bell-test #nist #quantum-mechanics