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.

[EX Q]: One variant of this phenomenon can be used to tune the electronic properties of boron nitride nanotubes from nearly insulating to metallic. Another variant of this phenomenon is induced by interference of standing laser waves to trap atoms of a Bose-Einstein condensate loaded into an optical lattice. Schrdinger's third article from his 1926 series of papers presented his perturbation theory treatment of this effect's modification of the Balmer and Lyman series. Along with van der Waals broadening and resonance broadening, this effect can produce pressure broadening of spectral lines. In addition to the giant version and the AC or Autler-Townes form of this effect, it exhibits variants that are linear and quadratic in the applied field. FTP name this shifting and splitting of spectral lines due to an external electric field, the analogue of the Zeeman effect.
[EX A]: Science

[EX Q]: This rule holds if the operator algebra for some set of observables is non-trivial; that is true because it is derived via the Schwarz inequality applied to the expectation value of the commutator of two observables operators. It formally bounds the product of the dispersions in two observables. An adapted form of this law applies to energy and time; it applies directly to any two components of spin, but it is best known in its application to position and momentum, the product of the standard deviations of which is at least h-bar over two. FTP, name this principle from quantum mechanics that limits the precision of measurements.
[EX A]: Science

[EX Q]: This man's daughter released a novel in 2006 which tells of Eva's encounters with the farmhand Ezekial, entitled Skinner's Drift, while his wife is the author of Rite of Passage, Threshhold, and Castaways. This man himself wrote a play in which Marius Byleveld's attempts to put Miss Helen in a nursing home are stopped by Elsa Barlow, and another in which Gladys, who has recently returned from the Fort England Clinic, repeatedly hides a diary before denying that Piet sold Steve out to the police. The major works by this author of A Lesson from Aloes and The Road to Mecca are known as the Port Elizabeth plays. Those include include the story of Sam training Willie for a dance contest at St. George's Park Tea Room, as well as the plays Hello and Goodbye, Boesman and Lena, and The Blood Knot. FTP, name this author of such anti-apartheid plays as No-Good Friday and Master Harold and the Boys.
[EX A]:
Literature