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Jayant Vishnu Narlikar FNA, FASc, FTWAS (born 19 July 1938) is an Indian astrophysicist and emeritus professor at the Inter-University Centre for Astronomy and Astrophysics (IUCAA). [ 1] He developed with Sir Fred Hoyle the conformal gravity theory, known as Hoyle–Narlikar theory. It synthesises Albert Einstein 's theory of relativity and ...
A gravitational field is used to explain gravitational phenomena, such as the gravitational force field exerted on another massive body. It has dimension of acceleration (L/T 2) and it is measured in units of newtons per kilogram (N/kg) or, equivalently, in meters per second squared (m/s 2 ). In its original concept, gravity was a force between ...
At a point in a local array of point masses. Gravitational torque and potential energy due to non-uniform fields and mass moments. V = volume of space occupied by the mass distribution. m = mr is the mass moment of a massive particle. Gravitational field for a rotating body. = zenith angle relative to rotation axis.
The gravity of Earth, denoted by g, is the net acceleration that is imparted to objects due to the combined effect of gravitation (from mass distribution within Earth) and the centrifugal force (from the Earth's rotation ). [ 2][ 3] It is a vector quantity, whose direction coincides with a plumb bob and strength or magnitude is given by the norm .
[54] [c] They attributed the motion of objects to an impetus (akin to momentum), which varies according to velocity and mass; [54] Buridan was influenced in this by Ibn Sina's Book of Healing. [1] Buridan and the philosopher Albert of Saxony (c. 1320–1390) adopted Abu'l-Barakat's theory that the acceleration of a falling body is a result of ...
Gravitation is a widely adopted textbook on Albert Einstein 's general theory of relativity, written by Charles W. Misner, Kip S. Thorne, and John Archibald Wheeler. It was originally published by W. H. Freeman and Company in 1973 and reprinted by Princeton University Press in 2017. It is frequently abbreviated MTW (for its authors' last names).
Gravitational acceleration. In physics, gravitational acceleration is the acceleration of an object in free fall within a vacuum (and thus without experiencing drag ). This is the steady gain in speed caused exclusively by gravitational attraction. All bodies accelerate in vacuum at the same rate, regardless of the masses or compositions of the ...
Occupation. astrologer-astronomer. Notable works. Pancha-siddhantika, Brhat-samhita, Brihajjataka. Varāhamihira (6th century CE, possibly c. 505 – c. 587), also called Varāha or Mihira, was an astrologer-astronomer who lived in or around Ujjain in present-day Madhya Pradesh, India.