QUES: Perhaps the first electric motors were simple electrostatic devices created by the Scottish monk Andrew Gordon in the 1740s. The theoretical principle behind production of mechanical force by the interactions of an electric current and a magnetic field, Ampere's force law, was discovered later by Andre-Marie Ampere in 1820. The conversion of electrical energy into mechanical energy by electromagnetic means was demonstrated by the British scientist Michael Faraday in 1821. A free-hanging wire was dipped into a pool of mercury, on which a permanent magnet (PM) was placed. When a current was passed through the wire, the wire rotated around the magnet, showing that the current gave rise to a close circular magnetic field around the wire. This motor is often demonstrated in physics experiments, brine substituting for toxic mercury. Though Barlow's wheel was an early refinement to this Faraday demonstration, these and similar homopolar motors were to remain unsuited to practical application until late in the century.

Who created the first electrostatic device?
What is the answer?
ANS: Andrew Gordon
QUES: Many ancient works, such as the Bible and the Greek tragedies,[citation needed] survive in hundreds of copies, and the relationship of each copy to the original may be unclear. Textual scholars have debated for centuries which sources are most closely derived from the original, hence which readings in those sources are correct.[citation needed] Although biblical books that are letters, like Greek plays, presumably had one original, the question of whether some biblical books, like the Gospels, ever had just one original has been discussed. Interest in applying textual criticism to the Qur'an has also developed after the discovery of the Sana'a manuscripts in 1972, which possibly date back to the 78th centuries.

Why are scholars concerned with analysis of plays?
What is the answer?
ANS: unanswerable
QUES: The library system of the university is divided between the main library and each of the colleges and schools. The main building is the 14-story Theodore M. Hesburgh Library, completed in 1963, which is the third building to house the main collection of books. The front of the library is adorned with the Word of Life mural designed by artist Millard Sheets. This mural is popularly known as "Touchdown Jesus" because of its proximity to Notre Dame Stadium and Jesus' arms appearing to make the signal for a touchdown.

How many stories tall is the main library at Notre Dame?
What is the answer?
ANS:
14