Problem: In the run-up to the London 2012 Summer Olympic Games and London 2012 Summer Paralympic Games, Eton's purpose-built Dorney Lake, a permanent, eight-lane, 2,200 metre course (about 1.4 miles) in a 400-acre park, officially known throughout the Games as Eton Dorney, provided training facilities for Olympic and Paralympic competitors, and during the Games, hosted the Olympic and Paralympic Rowing competitions as well as the Olympic Canoe Sprint event, attracting over 400,000 visitors during the Games period (around 30,000 per day), and voted the best 2012 Olympic venue by spectators. Access to the 400-acre parkland around the Lake is provided to members of the public, free of charge, almost all the year round.
How many spectators were there on average for the Paralympic Rowing competitions?
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Answer: unanswerable


Problem: This method involves coating LEDs of one color (mostly blue LEDs made of InGaN) with phosphors of different colors to form white light; the resultant LEDs are called phosphor-based or phosphor-converted white LEDs (pcLEDs). A fraction of the blue light undergoes the Stokes shift being transformed from shorter wavelengths to longer. Depending on the color of the original LED, phosphors of different colors can be employed. If several phosphor layers of distinct colors are applied, the emitted spectrum is broadened, effectively raising the color rendering index (CRI) value of a given LED.
In pcLEDs method, a fraction of what light is used?
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Answer: blue


Problem: In the Contemporary era, there were various socio-technological trends. Regarding the 21st century and the late modern world, the Information age and computers were forefront in use, not completely ubiquitous but often present in daily life. The development of Eastern powers was of note, with China and India becoming more powerful. In the Eurasian theater, the European Union and Russian Federation were two forces recently developed. A concern for Western world, if not the whole world, was the late modern form of terrorism and the warfare that has resulted from the contemporary terrorist acts.
The 21st century is refereed to as what?
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Answer:
the Information age