Context and question: Executive Directors and Under-Secretaries General of the UN
2011present Dr Babatunde Osotimehin (Nigeria)
20002010 Ms Thoraya Ahmed Obaid (Saudi Arabia)
19872000 Dr Nafis Sadik (Pakistan)
196987 Mr Rafael M. Salas (Philippines)
Who from the UN was missing during 1969-87?
Answer: unanswerable
Context and question: On April 17, Xinhua condemned what it called "biased coverage of the Lhasa riots and the Olympic torch relay by the U.S.-based Cable News Network (CNN)". The same day, the Chinese government called on CNN to "apologise" for having allegedly insulted the Chinese people, and for "attempting to incite the Chinese people against the government". CNN issued a statement on April 14, responded to China over 'thugs and goons' comment by Jack Cafferty.
Who was accused of bias on April 17 by Xinhua?
Answer: CNN
Context and question: The spectrum emitted by a blackbody radiator at temperatures of incandescent bulbs does not match the sensitivity characteristics of the human eye; the light emitted does not appear white, and most is not in the range of wavelengths at which the eye is most sensitive. Tungsten filaments radiate mostly infrared radiation at temperatures where they remain solid below 3,695 K (3,422 C; 6,191 F). Donald L. Klipstein explains it this way: "An ideal thermal radiator produces visible light most efficiently at temperatures around 6,300 C (6,600 K; 11,400 F). Even at this high temperature, a lot of the radiation is either infrared or ultraviolet, and the theoretical luminous efficacy (LER) is 95 lumens per watt." No known material can be used as a filament at this ideal temperature, which is hotter than the sun's surface. An upper limit for incandescent lamp luminous efficacy (LER) is around 52 lumens per watt, the theoretical value emitted by tungsten at its melting point.
What appears white to the human eye when it is emitted?
Answer:
unanswerable