Context and question: The X-ray crystal density method is primarily a method for determining the Avogadro constant NA but as the Avogadro constant is related to the Planck constant it also determines a value for h. The principle behind the method is to determine NA as the ratio between the volume of the unit cell of a crystal, measured by X-ray crystallography, and the molar volume of the substance. Crystals of silicon are used, as they are available in high quality and purity by the technology developed for the semiconductor industry. The unit cell volume is calculated from the spacing between two crystal planes referred to as d220. The molar volume Vm(Si) requires a knowledge of the density of the crystal and the atomic weight of the silicon used. The Planck constant is given by
How is unit nucleus volume calculated?
Answer: unanswerable
Context and question: Sociological attention to emotion has varied over time. Emilé Durkheim (1915/1965) wrote about the collective effervescence or emotional energy that was experienced by members of totemic rituals in Australian aborigine society. He explained how the heightened state of emotional energy achieved during totemic rituals transported individuals above themselves giving them the sense that they were in the presence of a higher power, a force, that was embedded in the sacred objects that were worshipped. These feelings of exaltation, he argued, ultimately lead people to believe that there were forces that governed sacred objects.
Who discussed the idea of a collective effervescence?
Answer: Emilé Durkheim
Context and question: Instead, the donated money was expended through "counterfeit drugs, siphoning off of drugs to the black market, and payments to ghost employees". Ultimately, there is a sufficient amount of money for health in developing countries, but local corruption denies the wider citizenry the resource they require.
What kind of employees received payments?
Answer:
ghost employees