These are organized by a classification scheme developed exclusively for Cosma. More…
Fundamental Physical Constants (Institute for Chemistry and Biochemistry)
Physics, Constants, Units, & Uncertainty (NIST)
CODATA Internationally recommended values of the Fundamental Physical Constants (NIST)
CODATA Internationally recommended values of the Fundamental Physical Constants, Universal (NIST)
Physics Fundamentals (Martindale’s Reference Desk)
Physical constant, sometimes called fundamental physical constant or universal constant, is a physical quantity that is generally believed to be both universal in nature and have constant value in time. It is contrasted with a mathematical constant, which has a fixed numerical value, but does not directly involve any physical measurement.
There are many physical constants in science, some of the most widely recognized being the speed of light in vacuum c, the gravitational constant G, Planck’s constant h, the electric constant ε0, and the elementary charge e. Physical constants can take many dimensional forms: the speed-of-light signifies a maximum speed for any object and is expressed dimensionally as length divided by time; while the fine-structure constant α, which characterizes the strength of the electromagnetic interaction, is dimensionless. — Wikipedia
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- Mathematics explains how giant whirlpools form in...on January 13, 2021 at 5:37 pm
Egg cells are among the largest cells in the animal kingdom. If moved only by the random jostlings of water molecules, a protein could take hours or even days to drift from one side of a forming egg cell to the other. Luckily, nature has developed a faster way: cell-spanning whirlpools in the immature egg cells of animals such as mice, zebrafish and fruit flies. These vortices enable cross-cell commutes that take just a fraction of the time. But until now, scientists didn't know how these […]
- Using neural networks for faster X-ray imagingon January 13, 2021 at 12:30 pm
A team of scientists from Argonne is using artificial intelligence to decode X-ray images faster, which could aid innovations in medicine, materials and energy.
- Wearable electronics for continuous cardiac,...on January 12, 2021 at 4:00 pm
A highly sensitive wearable sensor for cardiorespiratory monitoring could potentially be worn continuously by cardiac patients or others who require constant monitoring.
- Pillar-like molecules as biosensors for...on January 11, 2021 at 5:28 pm
Metabolites are organic molecules that take part in or are created during the biochemical reactions constantly taking place in an organism. For the human body, more than 110,000 metabolites have been identified. Metabolites play a role in metabolic syndrome, which is the situation in which several medical conditions occur simultaneously; the conditions include obesity, high blood pressure and high blood sugar. Metabolic syndrome is associated with a higher risk of developing cardiovascular […]
- 'Galaxy-sized' observatory sees potential hints...on January 11, 2021 at 5:10 pm
Scientists have used a "galaxy-sized" space observatory to find possible hints of a unique signal from gravitational waves, or the powerful ripples that course through the universe and warp the fabric of space and time itself.