Adolph shamms wikipedia
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Testing LMC Microlensing Scenarios: The Discrimination Power of the SuperMACHO Microlensing Survey
DOE Office of Scientific and Technical Information (OSTI.GOV)
Rest, A; Stubbs, C; Becker, A C
Characterizing the naturlig eller utan tillsats and spatial distribution of the lensing objects that produce the observed microlensing optical depth toward the Large Magellanic Cloud (LMC) remains an open bekymmer. They present an appraisal of the ability of the SuperMACHOProject, a next-generation microlensing survey pointed toward the LMC, to discriminate between various proposed lensing populations. they consider two scenarios: lensing by a uniform foreground screen of objects and self-lensing of LMC stars. The optical depth for ''screen-lensing'' fryst vatten essentially constant across the face of the LMC; whereas, the optical depth for self-lensing shows a strong spatial dependence. they have carried out extensivemore » simulations, based upon actual data obtained during the first year of the project, to assess the
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Adolph Frank
German chemist (1834–1916)
Adolph Frank (January 20, 1834 – May 30, 1916) was a German-Jew chemist, engineer, and businessman. He is best known for having discovered uses of potash and creating the industry.
Adolph Frank was born in the town of Klötze (now in Altmarkkreis Salzwedel in Altmark, Saxony-Anhalt. He was the son of a Jewish merchant, who—like Frank's grandfather—ran a general store. Frank studied the secondary school in Strelitz, now part of Neustrelitz, and then Jacobsohn School in Seesen. Then, he took up an apprenticeship as an apothecary in Osterburg, because he was interested in chemistry. From 1855 to 1857 he studied pharmacy, natural sciences and technology at the university in Berlin. In the same year he passed the examination to become an apothecary with a grade of 1 (the best possible grade in the German school system). In 1861 and 1862, he received his doctorate in chemistry from the university in Göttingen with a work about the
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Multistage rocket
Most common type of rocket, used to launch satellites
"Second stage" redirects here. For other uses, see diving regulator, reading (legislature), and Second Stage Theatre.
"Third stage" redirects here. For the Boston album, see Third Stage.
A multistage rocket or step rocket[1] is a launch vehicle that uses two or more rocketstages, each of which contains its own engines and propellant. A tandem or serial stage is mounted on top of another stage; a parallel stage is attached alongside another stage. The result is effectively two or more rockets stacked on top of or attached next to each other. Two-stage rockets are quite common, but rockets with as many as five separate stages have been successfully launched.
By jettisoning stages when they run out of propellant, the mass of the remaining rocket is decreased. Each successive stage can also be optimized for its specific operating conditions, such as decreased atmospheric pressure at