In mathematical physics, a null dust solution (sometimes called a null fluid) is a Lorentzian manifold in which the Einstein tensor is null. Such a spacetime can be interpreted as an exact solution of Einstein's field equation, in which the only mass-energy present in the spacetime is due to some kind of massless radiation.
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Famous quotes containing the words null, dust and/or solution:
“A strong person makes the law and custom null before his own will.”
—Ralph Waldo Emerson (1803–1882)
“Therefore I have uttered what I did not understand, things too wonderful for me, which I did not know. ... I had heard of you by the hearing of the ear, but now my eye sees you; therefore I despise myself, and repent in dust and ashes.””
—Bible: Hebrew, Job 42:3-6.
Job to God.
“There’s one solution that ends all life’s problems.”
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