Relativity

Cosma Home > Communication > Knowledge > Realm > Physical > Relativity

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

Dictionary

relativity : a theory which is based on the two postulates (1) that the speed of light in a vacuum is constant and independent of the source or observer and (2) that the mathematical forms of the laws of physics are invariant in all inertial systems and which leads to the assertion of the equivalence of mass and energy and of change in mass, dimension, and time with increased velocity — called also special relativity, special theory of relativity — Webster

OneLook, Free Dictionary, Wiktionary, Urban Dictionary

Thesaurus

Roget’s II (Thesaurus.com), Merriam-Webster Thesaurus, Visuwords

Encyclopedia

Relativity, generally refers to the theory of relativity usually encompasses two interrelated theories by Albert Einstein: special relativity and general relativity.

Special relativity applies to elementary particles and their interactions, describing all their physical phenomena except gravity.

General relativity explains the law of gravitation and its relation to other forces of nature. It applies to the cosmological and astrophysical realm, including astronomy.

The theory transformed theoretical physics and astronomy during the 20th century, superseding a 200-year-old theory of mechanics created primarily by Isaac Newton. It introduced concepts including spacetime as a unified entity of space and time, relativity of simultaneity, kinematic and gravitational time dilation, and length contraction.

In the field of physics, relativity improved the science of elementary particles and their fundamental interactions, along with ushering in the nuclear age. — Wikipedia

Encyclopædia Britannica

Relativity Theory (Eric Weisstein’s World of Physics, Wolfram Research)

Introduction

What is relativity? Einstein’s mind-bending theory explained (Dan Falk, Mach, NBC News)
The Theory of Relativity (Ask an Astronomer, Cornell University)

Search

WolframAlpha

Science

Preservation

History

The Collected Papers of Albert Einstein (California Institute of Technology)

Library

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

Participation

Education

Course

Special Relativity Course (Minute Physics)

Crash Course Physics (YouTube)

Einstein, Oppenheimer, Feynman: Physics in the 20th Century (MIT OCW Physics)
Introduction to Nuclear and Particle Physics (MIT OCW Physics)
Relativity (MIT OCW Physics)
OER Commons: Open Educational Resources

News

Science Daily, Phys.org, NPR Archives

Book

ISBNdb

Government

Document

USA.gov

Expression

Fun

returntotop

More…

Albert Einstein News -- ScienceDaily Albert Einstein in the News. Research institutes have been testing Albert Einstein's theory of special relativity and general relativity. Was Albert Einstein right?

  • Scientists use artificial intelligence to detect...
    on July 7, 2021 at 8:04 pm

    Researchers have used artificial intelligence to dramatically reduce the time it takes to process data coming from the Laser Interferometer Gravitational-Wave Observatory.

  • When testing Einstein's theory of general...
    on June 16, 2021 at 3:38 pm

    Small modeling errors may accumulate faster than previously expected when physicists combine multiple gravitational wave events (such as colliding black holes) to test Albert Einstein's theory of general relativity, suggest researchers.

  • Silencing vibrations in the ground and sounds...
    on April 6, 2021 at 4:07 pm

    POSTECH professor Junsuk Rho's research team demonstrates artificial control of elastic waves and underwater sounds applicable as stealth technology.

  • Quantum physicists measure the smallest...
    on March 10, 2021 at 5:26 pm

    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 opens up new possibilities for testing the laws of gravity on previously unattained small scales.

  • Quantum collaboration gives new gravity to the...
    on February 17, 2021 at 8:10 pm

    Scientists have used cutting-edge research in quantum computation and quantum technology to pioneer a radical new approach to determining how our Universe works at its most fundamental level.


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.

  • India monsoon death toll climbs to 159, dozens...
    on July 25, 2021 at 8:21 am

    The death toll from flooding and landslides triggered by heavy monsoon rains in India climbed to 159, officials said Sunday, with rescuers searching for dozens more missing.

  • India rescuers hunt for survivors as monsoon toll...
    on July 24, 2021 at 7:37 pm

    Rescuers in India waded through knee-deep mud and debris Saturday in a grim search for survivors as the death toll from heavy monsoon rains climbed to 115, with nearly 150,000 others evacuated.

  • Image: Hubble views a faraway galaxy through a...
    on July 24, 2021 at 8:35 am

    The center of this image from the NASA/ESA Hubble Space Telescope is framed by the tell-tale arcs that result from strong gravitational lensing, a striking astronomical phenomenon which can warp, magnify, or even duplicate the appearance of distant galaxies.

  • Baby orca dies in New Zealand after fruitless...
    on July 24, 2021 at 8:26 am

    Toa, the baby orca who captured hearts after he was found stranded in New Zealand waters, has lost his fight for survival, conservationists confirmed Saturday.

  • Research: Community policing that encourages...
    on July 23, 2021 at 3:10 pm

    Community policing that encourages relationships with local citizens may reduce police violence, while proactive policing strategies are associated with higher police violence, according to new Rutgers University–Camden research.