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.

artist was inspired to found a movement in his correspondences with Eva Watson-Schutze. In one exhibition of his work, he claimed "I am an American. . . the search for truth is my obsession. " He executed a series of abstract, subject-free works called Equivalents. One of his works shows a narrow gangway that separates an upper deck of men from a lower deck of women and children on a boat. This artist of The Steerage and founder of the journal Camera Work also depicted a certain woman holding her hands to her face and clutching a cattle skull in many photos. For 10 points, name this Photo Secession founder who took many pictures of his wife, Georgia O'Keeffe.
Fine Arts

A version of spectroscopy that is free of one form of this effect uses a standing wave to give radiation to a moving atom and is named for its two-photon transition. Due to this effect, atoms observe laser resonance leading to the phenomenon of optical molasses at its namesake cooling limit. Mossbauer spectroscopy uses this effect to modulate the energy of the incident gamma rays. An experiment that used a canal ray tube and a mirror to view light emissions was used to detect the transverse form of this effect, while its relativistic form involves changes equal to the square root of one plus beta over one minus beta. For 10 points, name this shift in the wavelength from a moving source that can be heard by an observer.
Science

This man was captured by a knight named William de Cahagnes after his battle-axe and sword shattered on the battlefield, but was released after his brother Henry successfully defended Winchester. He fell out of favor with Pope Innocent II after alienating Roger, bishop of Salisbury and entering into an unpopular treaty with Geoffrey of Anjou. After this man's son Eustace died, the issue of succession was decided by the Treaty of Wallingford, which made Henry of Anjou heir. FTP name this English King who fought the battle of Lincoln against the forces of Robert of Gloucester and his own cousin Matilda, the only British King from the house of Blois.

History