QUES: The halogen lamp reduces uneven evaporation of the filament and eliminates darkening of the envelope by filling the lamp with a halogen gas at low pressure, rather than an inert gas. The halogen cycle increases the lifetime of the bulb and prevents its darkening by redepositing tungsten from the inside of the bulb back onto the filament. The halogen lamp can operate its filament at a higher temperature than a standard gas filled lamp of similar power without loss of operating life. Such bulbs are much smaller than normal incandescent bulbs, and are widely used where intense illumination is needed in a limited space. Fiber-optic lamps for optical microscopy is one typical application.

Where are halogen bulbs not widely used?
What is the answer?
ANS: unanswerable
QUES: The Early Jurassic spans from 200 million years to 175 million years ago. The climate was much more humid than the Triassic, and as a result, the world was very tropical. In the oceans, Plesiosaurs, Ichthyosaurs and Ammonites fill waters as the dominant races of the seas. On land, dinosaurs and other reptiles stake their claim as the dominant race of the land, with species such as Dilophosaurus at the top. The first true crocodiles evolved, pushing out the large amphibians to near extinction. All-in-all, reptiles rise to rule the world. Meanwhile, the first true mammals evolve, but remained relatively small sized.

What is the span of years for the Early Jurassic?
What is the answer?
ANS: 200 million years to 175 million
QUES: The Museo Torres Garcia is located in the Old Town, and exhibits Joaquin Torres Garcia's unusual portraits of historical icons and cubist paintings akin to those of Picasso and Braque. The museum was established by Manolita Pina Torres, the widow of Torres Garcia, after his death in 1949. She also set up the Garcia Torres Foundation, a private non-profit organization that organizes the paintings, drawings, original writings, archives, objects and furniture designed by the painter as well as the photographs, magazines and publications related to him.

Manolita Pina Torres was the widow of who?
What is the answer?
ANS:
Torres Garcia