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There are many non-incandescent light sources, such as the fluorescent lamp, high-intensity discharge lamps and LED lamps, which have higher luminous efficiency, and some have been designed to be retrofitted in fixtures for incandescent lights. These devices produce light by luminescence. These lamps produce discrete spectral lines and do not have the broad "tail" of invisible infrared emissions. By careful selection of which electron energy level transitions are used, and fluorescent coatings which modify the spectral distribution, the spectrum emitted can be tuned to mimic the appearance of incandescent sources, or other different color temperatures of white light. Due to the discrete spectral lines rather than a continuous spectrum, the light is not ideal for applications such as photography and cinematography.

Do fluorescent lights have a higher or lower luminous efficiency than incandescents?
Answer: higher
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At war's end, American, British, and Soviet scientific intelligence teams competed to capture Germany's rocket engineers along with the German rockets themselves and the designs on which they were based. Each of the Allies captured a share of the available members of the German rocket team, but the United States benefited the most with Operation Paperclip, recruiting von Braun and most of his engineering team, who later helped develop the American missile and space exploration programs. The United States also acquired a large number of complete V2 rockets.

What military operation allowed the US to recruit the German engineer, Von Braun?
Answer: Operation Paperclip
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In the second decade of the 21st century the Portuguese economy suffered its most severe recession since the 1970s resulting in the country having to be bailed out by the European Commission, European Central Bank and International Monetary Fund. The bailout, agreed to in 2011, required Portugal to enter into a range of austerity measures in exchange for funding support of €78 billion. In May 2014 the country exited the bailout but reaffirmed its commitment to maintaining its reformist momentum. At the time of exiting the bailout the economy had contracted by 0.7% in the first quarter of 2014, however unemployment, while still high had fallen to 15.3 percent.

When did Portugal exit the bailout?
Answer:
May 2014