Context and question: Hydrogen's rarer isotopes also each have specific applications. Deuterium (hydrogen-2) is used in nuclear fission applications as a moderator to slow neutrons, and in nuclear fusion reactions. Deuterium compounds have applications in chemistry and biology in studies of reaction isotope effects. Tritium (hydrogen-3), produced in nuclear reactors, is used in the production of hydrogen bombs, as an isotopic label in the biosciences, and as a radiation source in luminous paints.
Where is tritium produced?
Answer: nuclear reactors
Context and question: A noteworthy development in 20th-century Protestant Christianity was the rise of the modern Pentecostal movement. Sprung from Methodist and Wesleyan roots, it arose out of meetings at an urban mission on Azusa Street in Los Angeles. From there it spread around the world, carried by those who experienced what they believed to be miraculous moves of God there. These Pentecost-like manifestations have steadily been in evidence throughout the history, such as seen in the two Great Awakenings. Pentecostalism, which in turn birthed the Charismatic movement within already established denominations, continues to be an important force in Western Christianity.
In what city did the modern Pentecostal movement begin?
Answer: Los Angeles
Context and question: Its knowledge and uses spread from China through the Middle East to medieval Europe in the 13th century, where the first water powered paper mills were built. Because of paper's introduction to the West through the city of Baghdad, it was first called bagdatikos. In the 19th century, industrial manufacture greatly lowered its cost, enabling mass exchange of information and contributing to significant cultural shifts. In 1844, the Canadian inventor Charles Fenerty and the German F. G. Keller independently developed processes for pulping wood fibres.
Which Canadian inventor helped F.G. Keller to develop their own process?
Answer:
Charles Fenerty