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.

[Q]: Descartes proposed a thought experiment in which all one has of this is due to a demon, and Quine's argument that no statement can be truly analytic allows him to support a doctrine holding that certainty in this is impossible, called fallibilism. The Gettier problem questions the traditional formulation that a statement's truth and its belief implies that it is this, while another philosopher discussed how this can be derived either through statements about "relations of ideas" or through "matters of fact" in Hume's fork. For 10 points, identify this concept defined as the intersection of what is true and believed, the theory of which is called epistemology.
[A]: Social Science


[Q]: 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.
[A]: Science


[Q]: They normally have association energies between -12 and -40 kilojoules per mole. The bifurcated type occurs when each donor interacts with two acceptors and vice versa. They tend to be linear, with the donor group pointing along the acceptor's lone pair orbital, though deviations often occur, particularly within the secondary structure of proteins. With approximately 10% covalent character, they are predominantly electrostatic interactions between electronegative atoms, such as fluorine, nitrogen, or oxygen, and their namesake. FTP name these bonds that explain the unusual physical characteristics of water, named for the presence of the first element on the periodic table.
[A]:
Science