Turbulence-radiation interactions in large-eddy simulations of luminous and nonluminous
nonpremixed flames," Proc.
Caption: Galaxies like Messier 81, a spiral galaxy in the constellation Ursa Major, are surrounded by large quantities of cold, nonluminous
gas, a new study finds.
gas fires (especially hydrogen), fire detection may be difficult.
and not directly detectable, dark matter is thought to account for 85 percent of the universe's mass.
These results will help researchers investigate the nature and mass of dark-matter halos, the total amount of luminous and nonluminous
material in the universe, and long-term cosmic evolution.
Since DM's existence is inferred solely from its gravitational effects, and its nature is otherwise unknown, one cannot rule-out the possibility that DM's behavior may be contradictory to the consequences of quantum mechanics as it applies to luminous matter (LM), which is particularly troubling since it necessarily brings into question the applicability of Planck's constant as a viable "action" in this nonluminous
While there have been a few surprises, such as the large amount of dark matter (a nonluminous
gravitating substance whose composition does not comprise elements from the periodic table) and dark energy (an unknown form of energy--perhaps a cosmological constant--that is causing the universe to speed up in its expansion instead of to slow down, as was originally expected), the inflationary picture has so far passed these three tests at a basic level.
The diagram is used to plot and compare the colors of both luminous and nonluminous
A splash of black in the center of the canvas creates a vortex of dark matter, that ubiquitous nonluminous
component of the universe whose identity remains a mystery.
Pretty much everybody agrees that this nonluminous
matter is probably composed of particles of a kind not encountered in everyday life- that is, it is made of something other than the ordinary constituents of atoms.
Sanders isn't worried by the fact that MOND may also need some nonluminous
This behavior, which was observed both in the field and in the laboratory, is similar to a nonluminous
pattern seen in octopuses attacked by moray eels (Hanlon and Messenger, 1996).