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.

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
Science

One of this poet's works addresses the title character by saying "My tongue had taught thee comfort, touch had quenched thy tears;" that character, a sick child, would eventually be "powerful amidst peers" at the "random grim forge. " That poem, "Felix Randal," appeared in the same collection as one that calls the title month "Mary's Month," entitled "May Magnificat. " Also the author of "As Kingfishers Catch Fire," another poem asks why the title concept would "lay a lionlimb against me" and or scan "With darksome devouring eyes my bruisd bones" The title concept of a further poem "over the bent World broods with warm breast and with ah! bright wings. "The author of "Carrion Comfort" and "God's Grandeur," for 10 points, identify this poet who wrote about a "dapple dawn-drawn falcon" in his work "The Windhover,"
Literature

He created the International Congress of American states while holding his most important position, and his namesake "amendment" attempted to forbid the government from funding any religious school with public funds. His financial transactions with the Little Rock and Fort Smith Railroads were detailed in a series of correspondences with Warren Fisher Jr, which were later released by James Mulligan. Ingersoll referred to him as the "Plumed Knight" during his party's convention, and he blamed Reverend Burchards accusation of Rum, Romanism, and Rebellion for his and John Logans defeat in the 1884 presidential election. FTP, name this longtime Republican senator and two-time Secretary of State, a certain Continental Liar from the state of Maine.

History