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DAILY NEWS ANALYSIS

  • 05 November, 2023

  • 2 Min Read

Gravitational Constant (G)

The strength of the gravitational force depends on the gravitational constant.Any mass warps the fabric of space-time around itself and more the mass, the more the warping.

  • Gravity – It is the force that an object feels when travelling along the warped path which tends to move the object towards the mass.
  • Gravitational constant – It is denoted by a ‘G’, a fundamental physical constant.

Gravitation constant was 1st accurately determined by Henry Cavendish in 1797 and it is an essential component of both Isaac Newton’s law of universal gravitation and Albert Einstein’s theory of general relativity.

Newton’s theory – The gravitational force between 2 objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.

  • G is the proportionality constant whose value is 6.673 × 10–11 N m2 kg–2.

Einstein’s theory of general relativity – It states that space and time are relative, and all motion must be relative to a frame of reference.

  • It provides a more accurate description of gravitation, particularly in extreme conditions like massive celestial objects.
  • G describe the curvature (or the ‘warping’) of space-time in the presence of mass and energy.

Importance of G – The precise value of G is crucial to understand celestial mechanics and to determine the mass of celestial bodies.

  • Yet its value has been determined only with an uncertainty of about 22 parts per million.

Source:


Oceanic Anoxic Event 1a and MASS EXTINCTION

Oceanic Anoxic Event 1a from the Paris Basin (Environment) Paper-3 PMP OAE 1a refers to a period during the Cretaceous Period (145 million years ago and ended 66 million years ago) when Earth's oceans became depleted of oxygen, causing a significant disruption in marine life.  Cause: The event is believed to have been

Viksit Panchayat Karmayogi (Good governance)

Viksit Panchayat Karmayogi (Good governance) Governance GS PAPER-2 PMP Dr. Jitendra Singh launched the ‘Viksit Panchayat Karmayogi’ initiative on Good Governance Day, celebrated to mark the 100th birth anniversary of former Prime Minister Atal Bihari Vajpayee. The initiative, which is part of the broader ‘Prashasan Gaon

Major programmes to control Air Pollution

Major programmes to control Air Pollution National Clean Air Programme? It was launched by the Ministry of Environment, Forests and Climate Change (MoEFCC) in January 2019. It is the first-ever effort in the country to frame a national framework for air quality management with a time-bound reduction target. The

Air pollution and Air quality Measures in India

Air pollution and Air quality Measures in India (Environment) GS Paper-3 P-M-P Air pollution may be defined as the presence of any solid, liquid or gaseous substance including noise and radioactive radiation in the atmosphere in such concentration that may be directly and/or indirectly injurious to humans or other l

Geopolitical Significance of Ports

Geopolitical Significance of Ports (IR)  Act as Geopolitical Assets: Ports enhance the projection of strategic reach, which helps strengthen the country’s control over important sea and energy supply routes.  E.g. Indian Navy’s staging base at Agalega Islands will enable marine patrols

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