instruction:
In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
question:
His work explaining the instability of James Watt's fly-ball governor is regarded as the birth of modern control theory, and his mathematical analysis of the stability of Saturn's rings showed that they could be neither entirely solid nor liquid. He showed how to calculate stresses in suspension bridges and coined the term "curl" to use in the differential form of his most famous accomplishment; however, the only other real work he did on it was the addition of a term for "displacement current. "  FTP identify this British physicist best known for combining his revision of Ampere's Law with Faraday's Law and Gauss's Laws of Electricity and Magnetism to produce his four namesake "equations" governing electromagnetism.
answer:
Science


question:
This god was suckled by a male boar and seawater when he was born at the edge of the Nine  Worlds. In the Lokesenna,  Loki says that this god has a muddy back and this god is also said to be the palest of all the gods. The name Gullintanni refers to this god's golden teeth. This god fathered the  three (*) castes of man when he took the form of Rig. This god retrieves the Brisingamen for Freyja by transforming into a seal and defeating Loki. This god arrives at Baldr's funeral upon his horse Gulltopr  and he wields the sword Hofund. This god is the son of nine mothers and kills and is killed by Loki at  Ragnarok. For 10 points, name this Norse god that sounds his Gjallarhorn to signal Ragnarok, and is the  guardian of Bifrost.
answer:
Social Science


question:
These phenomena are counted using the Wolf number, and butterfly diagrams show the concentration of these regions in latitude bands. Coronal loops and mass ejections generally originate from these regions. Though they are not eclipses, they possess an umbra and penumbra. These electromagnetic phenomena go through a variation cycle of about (*) 11 years. For 10 points, name these cooler areas on the Sun's photosphere that appear dark.
answer:

Science