23FEB 2024
Define dark matter

Define dark matter

While this hot gas can be seen, the actual dark matter it masks cannot.The existence of dark matter is known from its gravitational effects on visible matter, radiation, and the large-scale structure of the universe.Although dark matter doesn t absorb, emit or scatter light, the researchers inferred…

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08FEB 2021
Value of universal gravitational constant

Value of universal gravitational constant

A set of 13 measurements of G exhibit a 5.9-year periodic oscillation (solid curve) that closely matches the 5.9-year oscillation in LOD measurements (dashed curve). The two outliers are a 2014 quantum measurement and a 1996 measurement known to suffer from drift. The green dot is an estimate of the…

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28JAN 2016
Who Found the Higgs boson?

Who Found the Higgs boson?

(Photo : Getty Images/Peter Macdiarmid ) Scientists may have discovered a new particle in nature - or it could be a glitch. Scientists may have discovered a new particle in nature - or it could be a glitch. A tiny bump in datasets from two detectors in the Large Hadron Collider (LHC) has caused excitement…
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14MAR 2017
Dark energy Theory

Dark energy Theory

Sichuan University professor Tian Ma, left, and IU Department of Mathematics professor Shouhong Wang have developed a unified theory of dark matter and dark energy they believe could change our view of energy, gravitational interactions and the structure and formation of the universe. (Phys.org)—A pair…
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12NOV 2018
Equation for gravitational pull

Equation for gravitational pull

A black hole is a point in space with so much gravity that not even light (the fastest thing around) can escape, hence the name. To an observer it would just appear as a sphere of perfect blackness. At the heart of a black hole is an object called a singularity, a point of zero size and infinite density, yes you have read that correctly, Zero Size and Infinite Density. Any…

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09OCT 2015
Gravitational Forces Physics

Gravitational Forces Physics

Gravity Also called gravitation, gravitationEncyclopædia Britannica, Inc.in mechanics, the universal force of attraction acting between all matter. It is by far the weakest known force in nature and thus plays no role in determining the internal properties of everyday matter. On the other hand, through its long reach and universal action, it controls the trajectories of bodies…

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03OCT 2015
Force of gravity on the Moon

Force of gravity on the Moon

Is the weakest of the four universal forces which also include nuclear force, weak radiation force, and electromagnetism. Gravity is the force exerted by any object with mass on any other object with mass. Gravity is ubiquitous, omnipresent and causes objects to accelerate towards the centers of other objects exerting gravitational attraction (like the center of the Earth)…

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07JAN 2024
Newton laws of Gravitation

Newton laws of Gravitation

In 1687 Isaac Newton published Philosophiae Naturalis Principia Mathematica , a work of immense and profound impact. Newton s pronounced three laws of motion and a law of universal gravitation. They were a united set of principles which applied not only to the heavens but also to the earth in a uniform way. Their simplicity and extremely broad applicability forever changed…

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