Physical Constant

Cosma Home > Communication > Knowledge > Realm > Physical > Constant

Spotlight

Related

Pages

Physical Realm
Physical Laws (Constants) Relativity
Matter Molecule, Atom (Periodic Table), Particle
Force Gravity, Electromagnetism (Light, Color)

Resources

These are organized by a classification scheme developed exclusively for Cosma. More…

General

Portal

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)

Encyclopedia

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

Encyclopædia Britannica
Physical Constants (Eric Weisstein’s World of Physics, Wolfram Research)

Search

Physical Constants (Wolfram Alpha)

Library

WorldCat, Library of Congress, UPenn Online Books, Open Library

News

Phys.org, NPR Archives

Book

ISBNdb

Government

Document

USA.gov

returntotop

More…

Phys.org - latest science and technology news stories Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.

  • You're not imagining it: 3 ways COVID-19 has been...
    on April 16, 2021 at 3:10 pm

    For over a year, Americans have been struggling with the challenges imposed on them by the global coronavirus pandemic. While all Americans have struggled, the pandemic has imposed three distinctive sets of burdens on the 64 million Americans living with children under the age of 18.

  • Scientists program microalgae's 'oil factory' to...
    on April 14, 2021 at 5:10 pm

    By combining the 'chassis' of an oil-producing microalgae with genes from a Cuphea plant, scientists from the Single-Cell Center, Qingdao Institute of BioEnergy and Bioprocess Technology (QIBEBT) of the Chinese Academy of Sciences (CAS), can turn the algae into a microbial cell factory that can produce various oils with different properties.

  • Little swirling mysteries: New research uncovers...
    on April 14, 2021 at 4:51 pm

    Our high-speed, high-bandwidth world constantly requires new ways to process and store information. Semiconductors and magnetic materials have made up the bulk of data storage devices for decades. In recent years, however, researchers and engineers have turned to ferroelectric materials, a type of crystal that can be manipulated with electricity.

  • Plants thrive in a complex world by...
    on April 14, 2021 at 2:26 pm

    As a species, humans are wired to collaborate. That's why lockdowns and remote work have felt difficult for many of us during the COVID-19 pandemic.

  • Reducing ocean acidification by removing carbon...
    on April 13, 2021 at 8:02 pm

    It is now widely recognized that in order to reach the target of limiting global warming to well below 2°C above pre-industrial levels (as the objective of the Paris agreement), cutting the carbon emissions even at an unprecedented pace will not be sufficient, but there is the need for development and implementation of active Carbon Dioxide Removal (CDR) strategies. Among the CDR strategies that currently exist, relatively few studies have assessed the mitigation capacity of ocean-based […]