= J. Robert Oppenheimer
{c}
{tag=Physicist}
{title2=1904-1967}
{wiki}
= Julius Robert Oppenheimer
{c}
{synonym}
= Robert Oppenheimer
{c}
{synonym}
<J. Robert Oppenheimer> and <Hartland Snyder> calculated the continued <gravitational collapse> of an ideal pressureless spherical body in <general relativity>. Their 1939 model distinguishes the finite time measured along the infalling matter from the distant-coordinate description of the surface. Escaping <light> becomes progressively redshifted, connecting the dynamics of collapse with what an outside observer can receive. The calculation is a deliberately simplified model, with pressure and nonspherical structure omitted, whose importance lies in following the contraction beyond a static equilibrium description.<On Continued Gravitational Contraction by J. Robert Oppenheimer and Hartland Snyder>[1939 pressureless spherical-collapse model and distant/infalling time descriptions]{ref}
Homepage: https://www.ias.edu/oppenheimer-legacy
\Image[https://commons.wikimedia.org/wiki/Special:Redirect/file/Oppenheimer.jpg?width=250]
{title=Portrait of <J. Robert Oppenheimer>}
{description=United States Department of Energy or predecessor organization; individual photographer unknown; linked WNYC source. Public domain in the United States as an official-duty federal government photograph. https://commons.wikimedia.org/wiki/File:Oppenheimer.jpg[Source usage terms], via Wikimedia Commons.}
{source=https://commons.wikimedia.org/wiki/File:Oppenheimer.jpg}
{width=250}
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