QUES: Researchers include biologists, geologists, oceanographers, physicists, astronomers, glaciologists, and meteorologists. Geologists tend to study plate tectonics, meteorites from outer space, and resources from the breakup of the supercontinent Gondwana. Glaciologists in Antarctica are concerned with the study of the history and dynamics of floating ice, seasonal snow, glaciers, and ice sheets. Biologists, in addition to examining the wildlife, are interested in how harsh temperatures and the presence of people affect adaptation and survival strategies in a wide variety of organisms. Medical physicians have made discoveries concerning the spreading of viruses and the body's response to extreme seasonal temperatures. Astrophysicists at AmundsenScott South Pole Station study the celestial dome and cosmic microwave background radiation. Many astronomical observations are better made from the interior of Antarctica than from most surface locations because of the high elevation, which results in a thin atmosphere; low temperature, which minimizes the amount of water vapour in the atmosphere; and absence of light pollution, thus allowing for a view of space clearer than anywhere else on Earth. Antarctic ice serves as both the shield and the detection medium for the largest neutrino telescope in the world, built 2 km (1.2 mi) below AmundsenScott station.

Where is the largest neutrino telescope on Earth?
What is the answer?
ANS: AmundsenScott station.
QUES: A new style of wafers composed of gallium-nitride-on-silicon (GaN-on-Si) is being used to produce white LEDs using 200-mm silicon wafers. This avoids the typical costly sapphire substrate in relatively small 100- or 150-mm wafer sizes. The sapphire apparatus must be coupled with a mirror-like collector to reflect light that would otherwise be wasted. It is predicted that by 2020, 40% of all GaN LEDs will be made with GaN-on-Si. Manufacturing large sapphire material is difficult, while large silicon material is cheaper and more abundant. LED companies shifting from using sapphire to silicon should be a minimal investment.

By using silicon wafers, what is not being avoided?
What is the answer?
ANS: unanswerable
QUES: Downtown New Haven, occupied by nearly 7,000 residents, has a more residential character than most downtowns. The downtown area provides about half of the city's jobs and half of its tax base and in recent years has become filled with dozens of new upscale restaurants, several of which have garnered national praise (such as Ibiza, recognized by Esquire and Wine Spectator magazines as well as the New York Times as the best Spanish food in the country), in addition to shops and thousands of apartments and condominium units which subsequently help overall growth of the city.

In terms of economy the downtown portion is responsible for what?
What is the answer?
ANS:
half of the city's jobs