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: The Stratton-Chu model of this phenomenon attempts to improve on earlier scalar models such as the Rayleigh-Sommerfeld theory. The equivalence of complementary arrangements in producing this phenomenon is described by Babinets principle. A simple scalar theory of this phenomenon makes use of an integral named for Kirchhoff and Fresnel, and a simple pictorial model of this phenomenon is given by Huygens principle of wave propagation. FTP name this behavior observed in electrons by Davisson and Germer, the bending of waves as they pass obstacles.

Answer: Science


Question: nation was defeated at Koh Chang by the French. Khana Ratsadon led a bloodless revolution in this nation, one kingdom in which compiled the Dharmashastra. A kingdom in this nation succeeded the Kingdom of Hiran and was founded by Mangrai. This nation, once home to the kingdom of Lanna, was the site of a capital founded by General Taksin at Thonburi. The collapse of the Ayutthaya in this nation preceded the ascent of the Chakri dynasty of Rama I. It was invaded by Japan during World War II to access the Malay Peninsula. It was once dominated by the monarchs of Burma. For 10 points, name this nation, once known as Siam, whose capital is Bangkok.

Answer: History


Question: One way of calculating this quantity compares it to a standard of this value which can be calculated by the Edlen equation and involves finding the angle of minimum deviation. This quantity is modeled by the sum of a constant term and a term inversely proportional to wavelength squared in the (*) Cauchy equation, which is generalized to a three-term expansion by the Sellmeier equation. This quantity is related to polarizability by the LorentzLorenz equation, and it equals the square root of the product of relative permeability and permittivity. The Fresnel equations describe light moving between media with different values for this quantity, which is one for a vacuum. For 10 points, name this quantity which appears in Snell's law, the ratio of the speed of light in a vacuum to that in a medium.

Answer:
Science