To: “The Gravitational Attraction of a Right Rectangular Prism” by Dezsö Nagy, April, 1966, p. 362–371

Geophysics ◽  
1967 ◽  
Vol 32 (2) ◽  
pp. 368-368
Keyword(s):  
Rectangular Prism ◽  
Gravitational Attraction ◽  
Research Scientist ◽  
Pan American

Some typographical errors in the paper entitled “The Gravitational Attraction of a Right Rectangular Prism” by Dezsö Nagy, April, 1966, p. 362–371, were kindly pointed out by Donald B. Johnson, Research Scientist, Pan American Corp., Tulsa.

THE GRAVITATIONAL ATTRACTION OF A RIGHT RECTANGULAR PRISM

Geophysics ◽  
1966 ◽  
Vol 31 (2) ◽  
pp. 362-371 ◽  
Author(s):  
Dezsö Nagy
Keyword(s):  
Gravity Field ◽  
Dimensional Analysis ◽  
Three Dimensional ◽  
Vertical Component ◽  
Gravitational Effect ◽  
Rectangular Prism ◽  
Gravitational Attraction ◽  
Closed Expression ◽  
Building Element ◽  
Terrain Corrections

The derivation of a closed expression is presented to calculate the vertical component of the gravitational attraction of a right rectangular prism, with sides parallel to the coordinate axis. As any configuration can be expressed as the sum of prisms of various sizes and densities, the computation of the total gravitational effect of bodies of arbitrary shapes at any point outside of or on the boundary of the bodies is straightforward. To calculate the gravitational effect of the “unit” building element a subroutine called Prism has been developed, tested, and incorporated, in one program to calculate terrain corrections, and in another program for three‐dimensional analysis of a gravity field.

On: “THE GRAVITATIONAL ATTRACTION OF A RIGHT RECTANGULAR PRISM,” BY DEZSÖ NAGY (GEOPHYSICS, APRIL, 1966, PP. 362–371)

Geophysics ◽  
1966 ◽  
Vol 31 (5) ◽  
pp. 987-987 ◽  
Author(s):  
Charles E. Corbató
Keyword(s):  
Vertical Component ◽  
Rectangular Prism ◽  
Gravitational Attraction ◽  
Gravitational Effects ◽  
Rectangular Parallelopiped

You might be interested to note that the results obtained by Nagy (1966) and published in Geophysics concerning the vertical component of the gravitational attraction of a right rectangular prism not only had been published previously by Sorokin and Haáz but also were derived and published (in English) 136 years ago by Everest (1830, p. 94–97). Everest calculated closed expressions which are equivalent to that of Nagy for the horizontal and vertical gravitational effects of a rectangular parallelopiped and used these equations to estimate the topographic deflection of the plumb bob due to the Satpura Range in India.

On: “THE GRAVITATIONAL ATTRACTION OF A RIGHT RECTANGULAR PRISM,” BY DEZSÖ NAGY (GEOPHYSICS, APRIL, 1966, PP. 362–371)

Geophysics ◽  
1966 ◽  
Vol 31 (5) ◽  
pp. 987-987 ◽  
Author(s):  
J. Cl. De Bremaecker
Keyword(s):  
Rectangular Prism ◽  
Gravitational Attraction ◽  
Simple Method ◽  
Coordinate Axis

The recent paper by Dezsö Nagy, “The gravitational attraction of a right rectangular prism,” is certainly of great interest. It might be pointed out, however, that in his textbook published in 1930, MacMillan already gave a formula for computing the potential of this body, as well as an extremely simple method to compute the derivatives along a coordinate axis. The Dover reprint is widely available.

On: “The Gravitational Attraction of a Right Rectangular Prism” by Dezsö Nagy (GEOPHYSICS, April 1966, p. 362–371)

Geophysics ◽  
1967 ◽  
Vol 32 (5) ◽  
pp. 920-920
Author(s):  
P. Vallabh Sharma
Keyword(s):  
Closed Form ◽  
Rectangular Prism ◽  
Gravitational Attraction

I would like to offer the following comment on the paper “The Gravitational Attraction of a Right Rectangular Prism” by Nagy in the April 1966 issue of Geophysics. It might be of interest to note that besides the papers (Sorokin, 1951; Haáz, 1953) which have been cited by the author, an earlier publication by Ansel (1936) also gives a solution in closed form for the gravitational attraction of a rectangular prism. Furthermore, Müller (1963) has given a solution which is valid for all possible positions of the prism with vertical sides.

Maclaurin on Occasionalism: A Reply to Ablondi

2016 ◽  
Vol 14 (1) ◽  
pp. 125-135
Author(s):  
Patrick J. Connolly
Keyword(s):  
Eighteenth Century ◽  
Recent Article ◽  
Gravitational Attraction ◽  
Matter Theory ◽  
Key Features ◽  
Short Essay ◽  
The Way

In a recent article Fred Ablondi compares the different approaches to occasionalism put forward by two eighteenth-century Newtonians, Colin Maclaurin and Andrew Baxter. The goal of this short essay is to respond to Ablondi by clarifying some key features of Maclaurin's views on occasionalism and the cause of gravitational attraction. In particular, I explore Maclaurin's matter theory, his views on the explanatory limits of mechanism, and his appeals to the authority of Newton. This leads to a clearer picture of the way in which Maclaurin understood gravitational attraction and the workings of nature.

Cultura Panamericana

2019 ◽  
Vol 6 (1) ◽  
Author(s):  
Anthony Macías
Keyword(s):  
Los Angeles ◽  
Sense Of Place ◽  
American Culture ◽  
Pop Culture ◽  
Mixed Race ◽  
Urban Spaces ◽  
Expressive Culture ◽  
Culture Industries ◽  
Latin Americans ◽  
Pan American

I am writing this analytical appreciation of cultura panamericana, or pan-American culture, to propose a wider recognition of how its historical linkages and contemporary manifestations confront colonialism, honor indigenous roots, and reflect multiple, mixed-race identities. Although often mediated by transnational pop-culture industries, expressive cultural forms such as art and music articulate resonant themes that connect US Latinos and Latinas to Latin Americans, pointing the way toward a hemispheric imaginary. In US murals, for example, whether in the Chicago neighborhood of Pilsen or the Los Angeles neighborhood of Highland Park, pan-American expressive culture offers alternative representations by embracing indigeneity, and it creates a sense of place by tropicalizing urban spaces.

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