Question: The first successful light bulb filaments were made of carbon (from carbonized paper or bamboo). Early carbon filaments had a negative temperature coefficient of resistance as they got hotter, their electrical resistance decreased. This made the lamp sensitive to fluctuations in the power supply, since a small increase of voltage would cause the filament to heat up, reducing its resistance and causing it to draw even more power and heat even further. In the "flashing" process, carbon filaments were heated by current passing through them while in an evacuated vessel containing hydrocarbon vapor (usually gasoline). The carbon deposited on the filament by this treatment improved the uniformity and strength of filaments as well as their efficiency. A metallized or "graphitized" filament was first heated in a high-temperature oven before flashing and lamp assembly. This transformed the carbon into graphite which further strengthened and smoothed the filament. This also changed the filament to have a positive temperature coefficient, like a metallic conductor, and helped stabilize the lamp's power consumption, temperature and light output against minor variations in supply voltage.
Try to answer this question if possible: What was the primary problem with early carbon filaments?
Answer: as they got hotter, their electrical resistance decreased
Question: Qin armies finished their conquest of the kingdoms of Shu and Ba by 316 BC. Any written records and civil achievements of earlier kingdoms were destroyed. Qin administrators introduced improved agricultural technology. Li Bing, engineered the Dujiangyan irrigation system to control the Min River, a major tributary of the Yangtze. This innovative hydraulic system was composed of movable weirs which could be adjusted for high or low water flow according to the season, to either provide irrigation or prevent floods. The increased agricultural output and taxes made the area a source of provisions and men for Qin's unification of China.
Try to answer this question if possible: Who began their conquest of Shu and Ba in 316 BC?
Answer: unanswerable
Question: After losing the 1970 general election, Labour returned to opposition, but retained Harold Wilson as Leader. Heath's government soon ran into trouble over Northern Ireland and a dispute with miners in 1973 which led to the "three-day week". The 1970s proved a difficult time to be in government for both the Conservatives and Labour due to the 1973 oil crisis which caused high inflation and a global recession. The Labour Party was returned to power again under Wilson a few weeks after the February 1974 general election, forming a minority government with the support of the Ulster Unionists. The Conservatives were unable to form a government alone as they had fewer seats despite receiving more votes numerically. It was the first general election since 1924 in which both main parties had received less than 40% of the popular vote and the first of six successive general elections in which Labour failed to reach 40% of the popular vote. In a bid to gain a majority, a second election was soon called for October 1974 in which Labour, still with Harold Wilson as leader, won a majority of three, gaining just 18 seats taking its total to 319.
Try to answer this question if possible: What group of people supported the Conservatives?
Answer: unanswerable
Question: In 2011, Bandai posted a countdown on a teaser site. Once the countdown was finished, it revealed a reboot of the Digimon World series titled Digimon World Re:Digitize. An enhanced version of the game released on Nintendo 3DS as Digimon World Re:Digitize Decode in 2013. Another role-playing game by the name Digimon Story: Cyber Sleuth is set for release in 2015 for PlayStation Vita. It is part of the Digimon Story sub-series, originally on Nintendo DS and has also been released with English subtitles in North America.
Try to answer this question if possible: What did Sony release enhanced version of
Answer:
unanswerable