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The observation of minutes to hours of X-ray flashes after a short gamma-ray burst is consistent with small particles of a primary object like a neutron star initially swallowed by a black hole in less than two seconds, followed by some hours of lesser energy events, as remaining fragments of tidally disrupted neutron star material (no longer ...
Bush stated that he issued the order to head off a more-restrictive Ward Connerly-backed ballot initiative. [ 25 ] [ 27 ] The order was controversial, particularly among black Americans , and led to a widely publicized sit-in in Bush's Florida State Capitol office by two Democratic state legislators, Senator Kendrick Meek and Representative ...
Discounts and allowances, reductions in the basic prices of goods or services; Discounting, a financial mechanism in which a debtor obtains the right to delay payments to a creditor; Delay discounting, the decrease in perceived value of receiving a good at a later date compared with receiving it at an earlier date; Discount store
The relative abundances depend on a single parameter, the ratio of photons to baryons. This value can be calculated independently from the detailed structure of CMB fluctuations. The ratios predicted (by mass, not by abundance) are about 0.25 for 4 He:H, about 10 −3 for 2 H:H, about 10 −4 for 3 He:H, and about 10 −9 for 7 Li:H. [38]
Diatomite rock sample from Sisquoc Formation Scanning electron micrograph of diatomaceous earth. Diatomaceous earth (/ ˌ d aɪ. ə t ə ˈ m eɪ ʃ ə s / DY-ə-tə-MAY-shəs), diatomite (/ d aɪ ˈ æ t ə m aɪ t / dy-AT-ə-myte), celite or kieselgur/kieselguhr is a naturally occurring, soft, siliceous sedimentary rock that can be crumbled into a fine white to off-white powder.
X-ray astronomy, which is an observational branch of astronomy, which deals with the study of X-ray emission from celestial objects. X-ray microscopic analysis, which uses electromagnetic radiation in the soft X-ray band to produce images of very small objects.
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