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.
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Question: Gravitational redshift was measured by Pound, Rebka, and Snider in Harvard's Jefferson Tower using this technique to detect a frequency shift of order one part in ten to the 14th. It can be used for precise studies of the Zeeman effect in nuclei. Iron 57 and tin 119 are two of the isotopes used in this type of spectroscopy due to narrow linewidths in their transitions. Before this technique, the large size of Doppler shifts relative to transition widths made nuclear spectroscopy problematic. It was discovered by its namesake when he was a graduate student at the Munich University of Technology. FTP, what is this effect in which a crystal lattice reduces recoil energy

Answer: Science

Question: The category of these objects has the property that every morphism is a monomorphism. The spectrum of one of these objects contains one point, and the p-adic numbers for a given p form one of these. These objects necessarily have zero Krull dimension. Those with a finite number of elements have order equal to a power of a prime. Their extensions have a one-to-one correspondence with their intermediates according to the fundamental theorem of Galois theory. A division algebra is one of these without multiplicative commutativity, and can be defined as a ring with multiplicative identity, inverse, and commutativity. For 10 points, name these algebriac structures that include the rationals and reals.

Answer: Science

Question: The out-of-season blooming of a begonia tree is seen as a bad sign in this work, and in the end the protagonist ends up being asked to serve at court and it is told that he became a bodhisattva. After one member of the central family in this work becomes a second degree consort, a visit by her sets off the transformation of the two family compounds into the Takuanyuan. Another character in this work had a coffin already made when a priest and a monk come along and helped him and Phoenix recover. One figure in this work brings a stone to life by touching it, which eventually began watering a crimson flower, and it eventually ended up in the mouth of Pao-yu. FTP, identify this novel by Cao Xueqin.

Answer:
Literature