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The Scheinergrade (Sch.) system was devised by the German astronomer Julius Scheiner (18581913) in 1894 originally as a method of comparing the speeds of plates used for astronomical photography. Scheiner's system rated the speed of a plate by the least exposure to produce a visible darkening upon development. Speed was expressed in degrees Scheiner, originally ranging from 1 Sch. to 20 Sch., where an increment of 19 Sch. corresponded to a hundredfold increase in sensitivity, which meant that an increment of 3 Sch. came close to a doubling of sensitivity.

What is the Scheinergrade system used for?
Answer: comparing the speeds of plates used for astronomical photography
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Adjacent to the palace is the Royal Mews, also designed by Nash, where the royal carriages, including the Gold State Coach, are housed. This rococo gilt coach, designed by Sir William Chambers in 1760, has painted panels by G. B. Cipriani. It was first used for the State Opening of Parliament by George III in 1762 and has been used by the monarch for every coronation since George IV. It was last used for the Golden Jubilee of Elizabeth II. Also housed in the mews are the coach horses used at royal ceremonial processions.

Who designed the Royal Mews?
Answer: Nash
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Corruption is often most evident in countries with the smallest per capita incomes, relying on foreign aid for health services. Local political interception of donated money from overseas is especially prevalent in Sub-Saharan African nations, where it was reported in the 2006 World Bank Report that about half of the funds that were donated for health usages were never invested into the health sectors or given to those needing medical attention.

How many funds did not reach their intended recipients who needed medical attention?
Answer:
about half