Reference Terms

from Wikipedia, the free encyclopedia

Gravitation

Gravity is a force of attraction that acts between bodies that have mass.

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

For more information, see the following related content on ScienceDaily:

1

2

Predicting the Efficiency of Oxygen-Evolving Electrolysis on the Moon and Mars

Feb. 8, 2022 — Scientists have today provided more insight into the possibility of establishing a pathway to generate oxygen for humans to potentially call the Moon or Mars 'home' for extended periods of ...

Researchers Remeasure Gravitational Constant

July 12, 2022 — Researchers have redetermined the gravitational constant G using a new measurement technique. Although there is still a large degree of uncertainty regarding this value, the new method offers great ...

Quantum Physicists Measure the Smallest Gravitational Force Yet

Mar. 10, 2021 — Researchers have succeeded in measuring the gravitational field of a gold sphere, just 2 mm in diameter, using a highly sensitive pendulum - and thus the smallest gravitational force. The experiment ...

Despite Doubts from Quantum Physicists: Einstein's Theory of Relativity Reaffirmed

July 13, 2023 — One of the most basic assumptions of fundamental physics is that the different properties of mass -- weight, inertia and gravitation -- always remain the same in relation to each other. Although all ...

Dark Energy: Neutron Stars Will Tell Us If It's Only an Illusion

Mar. 3, 2022 — Scientists provide the first simulation of neutron star collisions in extensions of general relativity relevant for cosmology, offering a new approach to test ...

How Can Flying Insects and Drones Tell Up from Down?

Oct. 20, 2022 — For proper operation, drones usually use accelerometers to determine the direction of gravity. Scientists have now shown that drones can estimate the direction of gravity by combining visual ...

First Glimpse of What Gravity Looks Like on Cosmological Scales

Nov. 4, 2022 — Scientists have reconstructed gravity to find a more robust way of understanding the ...

Future Gravitational Wave Detector in Space Could Uncover Secrets of the Universe

Feb. 10, 2022 — New research has shown that future gravitational wave detections from space will be capable of finding new fundamental fields and potentially shed new light on unexplained aspects of the ...

Matter and Antimatter Seem to Respond Equally to Gravity

Jan. 5, 2022 — As part of an experiment to measure -- to an extremely precise degree -- the charge-to-mass ratios of protons and antiprotons, researchers have found that, within the uncertainty of the experiment, ...

Starting Motions of Competitive Swimmers as They Enter the Water

Sep. 9, 2021 — Scientists studied the biomechanics of swimmer 'kickstarts' using force sensors and motion-capture cameras. They found that force exerted by the hands on the starting platform is ...

Matter & Energy News

December 3, 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

updated 12:56 pm ET

PicoRuler: Molecular Rulers for High-Resolution Microscopy

Dec. 1, 2023 — A team presents a groundbreaking advance for the world of high-resolution fluorescence microscopy: The innovative method enables researchers for the first time to use biomolecules as molecular rulers ...

Harvesting More Solar Energy With Supercrystals

Dec. 1, 2023 — Hydrogen is a building block for the energy transition. To obtain it with the help of solar energy, researchers have developed new high-performance nanostructures. The material holds a world record ...

Control Over Friction, from Small to Large Scales

Dec. 1, 2023 — Friction is hard to predict and control, especially since surfaces that come in contact are rarely perfectly flat. New experiments demonstrate that the amount of friction between two silicon ...

A Color-Based Sensor to Emulate Skin's Sensitivity

Dec. 1, 2023 — In a step toward more autonomous soft robots and wearable technologies, researchers have created a device that uses color to simultaneously sense multiple mechanical and temperature ...

Photonic Chip That 'Fits Together Like Lego' Opens Door to Semiconductor Industry

Dec. 1, 2023 — A new semiconductor architecture integrates traditional electronics with photonic, or light, components could have application in advanced radar, ...

Researchers Have Taught an Algorithm to 'Taste'

Dec. 1, 2023 — Incorporating human tastes into artificial intelligence makes it easier for wine buyers thirsting for the right wine. Researchers have shown that AI can accurately predict individual wine ...

To Help Autonomous Vehicles Make Moral Decisions, Researchers Ditch the 'Trolley Problem'

Dec. 1, 2023 — Researchers have developed a new experiment to better understand what people view as moral and immoral decisions related to driving vehicles, with ...

Scientists Use A.I.-Generated Images to Map Visual Functions in the Brain

Nov. 30, 2023 — Researchers have demonstrated the use of AI-selected natural images and AI-generated synthetic images as neuroscientific tools for probing the visual processing areas of the brain. The goal is to ...

Smart Microgrids Can Restore Power More Efficiently and Reliably in an Outage

Nov. 30, 2023 — A new AI model that optimizes the use of renewables and other energy sources outperforms traditional power restoration techniques for islanded ...

Researchers Develop Novel Deep Learning-Based Detection System for Autonomous Vehicles

Nov. 30, 2023 — Autonomous vehicles require object detection systems to navigate traffic and avoid obstacles on the road. However, current detection methods often ...