Reference Terms

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Altimeter

An altimeter is an active instrument used to measure the altitude of an object above a fixed level.

Note: The above text is excerpted from the Wikipedia article "Altimeter", which has been released under the GNU Free Documentation License.

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Rocket Engine Exhaust Pollution Extends High Into Earth's Atmosphere

May 17, 2022 — Researchers assessed the potential impact of a rocket launch on atmospheric pollution by investigating the heat and mass transfer and rapid mixing of the combustion byproducts. The team modeled the ...

Constraining Quantum Measurement

Nov. 30, 2021 — The quantum world and our everyday world are very different places. Physicists now investigate how the act of measuring a quantum particle transforms it into an everyday ...

'Hot' New Form of Microscopy Examines Materials Using Evanescent Waves

Nov. 7, 2023 — A team of researchers has built a prototype microscope that does not rely on backscattered radiation, instead uses passive detection of thermally excited evanescent waves. They have examined ...

Risk from Solar Flares to Planes Is Real but Not Worth Costly Mitigation

Sep. 2, 2021 — Aviation guidelines aim to mitigate the effects of radiation, mainly caused by galactic cosmic rays and solar energetic particles, or SEP. The fluxes in the former are stable and predictable: dose ...

Researchers Develop Tiny Sensor for Measuring Subtle Pressure Changes Inside the Body

Feb. 17, 2021 — Researchers have developed an extremely sensitive miniaturized optical fiber sensor that could one day be used to measure small pressure changes in the ...

Do Measurements Produce the Reality They Show Us?

Aug. 24, 2023 — The measurement values determined in sufficiently precise measurements of physical systems will vary based on the relation between the past and the future of a system determined by its interactions ...

MICROSCOPE Mission Presents Most Precise Test of General Relativity's Weak Equivalence Principle

Sep. 14, 2022 — Researchers present the most precise test yet of the weak equivalence principle, a key component of the theory of general relativity. The report describes the final results from the MICROSCOPE ...

Quantum Movements of Small Glass Sphere Controlled

July 14, 2021 — The quantum movements of a small glass sphere could be controlled for the first time in Vienna by combining microscopy with control engineering, setting the course for future quantum ...

Breaking Through the Resolution Barrier With Quantum-Limited Precision

Jan. 5, 2021 — Researchers have developed a new method of distance measurement for systems such as GPS, which achieves more precise results than ever before. Using quantum physics, the team has successfully ...

Researchers Develop Low-Cost Sensor to Enhance Robots' Sense of Touch

July 27, 2023 — Researchers have developed an L3 F-TOUCH sensor to enhance tactile capabilities in robots, allowing it to 'feel' objects and adjust its grip ...

Matter & Energy News

November 28, 2023

Printed Robots With Bones, Ligaments, and Tendons

Nov. 15, 2023 — For the first time, researchers have succeeded in printing a robotic hand with bones, ligaments and tendons made of different polymers using a new laser scanning technique. The new technology makes it possible to 3D print special plastics with ...

'Cooling Glass' Blasts Building Heat Into Space

Nov. 13, 2023 — Researchers aiming to combat rising global temperatures have developed a new 'cooling glass' that can turn down the heat indoors without electricity by drawing on the cold depths of space. The new technology, a microporous glass coating, can lower ...

Photonics Team Develops High-Performance Ultrafast Lasers That Fit on a Fingertip

Nov. 9, 2023 — Scientists demonstrate a novel approach for creating high-performance ultrafast lasers on nanophotonic chips. The new advance will enable pocket-sized devices that can perform detailed GPS-free ...

450-Million-Year-Old Organism Finds New Life in Softbotics

Nov. 6, 2023 — Researchers have used fossil evidence to engineer a soft robotic replica of pleurocystitids, a marine organism that existed nearly 450 million years ago and is believed to be one of the first echinoderms capable of movement using a muscular ...

Latest Headlines

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Minimalist or Maximalist? The Life of a Microbe a Mile Underground

Nov. 28, 2023 — Researchers characterize nearly 600 microbial genomes collected from goldmine. The study illuminates 'microbial dark matter' residing below the surface. Microbes divide into two groups: minimalists ...

Researchers Engineer a Material That Can Perform Different Tasks Depending on Temperature

Nov. 28, 2023 — Researchers report that they have developed a new composite material designed to change behaviors depending on temperature in order to perform ...

New Framework for Using AI in Health Care Considers Medical Knowledge, Practices, Procedures, Values

Nov. 27, 2023 — Health care organizations are looking to artificial intelligence (AI) tools to improve patient care, but their translation into clinical settings ...

Measuring Long-Term Heart Stress Dynamics With Smartwatch Data

Nov. 27, 2023 — Biomedical engineers have developed a method using data from wearable devices such as smartwatches to digitally mimic an entire week's worth of an individual's heartbeats. The new 'digital twins' ...

Wave Devouring Propulsion: A Revolutionary Green Technology for Maritime Sustainability

Nov. 27, 2023 — A new form of wave devouring propulsion (WDP) could power ships and help to cut greenhouse gas emissions in the maritime ...

Immersive Engagement in Mixed Reality Can Be Measured With Reaction Time

Nov. 27, 2023 — In the real world/digital world cross-over of mixed reality, a user's immersive engagement with the program is called presence. Now, researchers have identified reaction time as a potential presence ...

Sensitive Ecosystems at Risk from Mine Waste

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Nov. 27, 2023 — Hospital MRI scanners, using 3 Tesla magnets, provide poor spatial resolution in brain imaging. More recent 7T MRIs are better but used mainly in the ...

New Method Verifies Carbon Capture in Concrete

Nov. 27, 2023 — Carbon capture is essential to reduce the impact of human carbon dioxide emissions on our climate. Researchers have developed a method to confirm whether carbon in concrete originates from the raw ...

New Way of Searching for Dark Matter

Nov. 27, 2023 — Wondering whether whether Dark Matter particles actually are produced inside a jet of standard model particles, led researchers to explore a new detector signature known as semi-visible jets, which ...