Much ado was made about the Higgs boson when this elusive particle was discovered in 2012. Though it was touted as giving ordinary matter mass, interactions with the Higgs field only generate about 1 percent of ordinary mass. ...
General Physics
Aug 3, 2022
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420
On Feb. 3, an asteroid more than three times as long as it is wide safely flew past Earth at a distance of about 1.1 million miles (1.8 million kilometers, or a little under five times the distance between the Moon and Earth). ...
Planetary Sciences
Feb 18, 2023
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612
Currently, there are no specific guidelines on the most effective materials and designs for facemasks to minimize the spread of droplets from coughs or sneezes to mitigate the transmission of COVID-19. While there have been ...
General Physics
Jun 30, 2020
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11368
(PhysOrg.com) -- In an attempt to mimic the photosynthetic systems found in plants and some bacteria, scientists have taken a step toward developing an artificial light-harvesting system (LHS) that meets one of the crucial ...
An invasive fish species last seen in Missouri in 2019 is now back, and there are concerns it could continue to spread throughout the state.
Plants & Animals
Jun 12, 2023
0
62
The image of Neanderthals as brutish and culturally unsophisticated has changed in recent years – they could make cave art, jewellery, complex stone tools and may have had language and cooked foods. Yes, they were extremely ...
Archaeology
Jan 31, 2019
0
30
Researchers have developed a way to use laser light to pull a macroscopic object. Although microscopic optical tractor beams have been demonstrated before, this is one of the first times that laser pulling has been used on ...
Optics & Photonics
Jan 11, 2023
0
722
The first catalogue of more than a billion stars from ESA's Gaia satellite was published today – the largest all-sky survey of celestial objects to date.
Astronomy
Sep 14, 2016
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2541
New interference radar functions employed by a team of researchers from Chapman University and other institutions improve the distance resolution between objects using radar waves. The results may have important ramifications ...
General Physics
Aug 2, 2023
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335
The twin galaxies NGC 4496A and NGC 4496B dominate the frame in this image from the NASA/ESA Hubble Space Telescope. Both galaxies lie in the constellation Virgo, but despite appearing side-by-side in this image they are ...
Astronomy
Mar 5, 2022
0
142
Distance (or farness) is a numerical description of how far apart objects are. In physics or everyday discussion, distance may refer to a physical length, or an estimation based on other criteria (e.g. "two counties over"). In mathematics, a distance function or metric is a generalization of the concept of physical distance. A metric is a function that behaves according to a specific set of rules, and provides a concrete way of describing what it means for elements of some space to be "close to" or "far away from" each other.
In most cases, "distance from A to B" is interchangeable with "distance between B and A".
This text uses material from Wikipedia, licensed under CC BY-SA
