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Pi (instrument)
''Pi'' ( th, ปี่, ) is the generic term for any of a variety of quadruple reed oboes used in the traditional music of Thailand, ''piphat''. It is very similar in construction and playing technique to Burmese Hne and Cambodian ''sralai''. Varieties An entirely different instrument, a bamboo free reed pipe called ''pi chum'' (ปี่จุม), is used by the Lanna of Northern Thailand. Pi nok The ''pi nok'' is smallest among pi nok, klang, and nai. Pi noks have been played since the ancient times. Pi nai The ''pi nai'' (41–42×4.5 cm) is commonly seen in Thai literature such as ''Phra Aphai Mani''. Pi cha nai The ''pi chanai'' is ''pi song thon'' (ปี่สองท่อน, ''pi'' that consists of two parts). The body part is called ''lao pi'' (เลาปี่), the mouthpiece part is called "lamphong" (ลำโพง). Both parts are made from wood or ivory. It is presumed that the Thais obtained this musical influence from India due to its similarity ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pi Mon
The number (; spelled out as "pi") is a mathematical constant that is the ratio of a circle's circumference to its diameter, approximately equal to 3.14159. The number appears in many formulas across mathematics and physics. It is an irrational number, meaning that it cannot be expressed exactly as a ratio of two integers, although fractions such as \tfrac are commonly Approximations of π, used to approximate it. Consequently, its decimal representation never ends, nor repeating decimal, enters a permanently repeating pattern. It is a transcendental number, meaning that it cannot be a solution of an equation (mathematics), equation involving only sums, products, powers, and integers. The transcendence of implies that it is impossible to solve the ancient challenge of squaring the circle with a Compass-and-straightedge construction, compass and straightedge. The decimal digits of appear to be random sequence, randomly distributed, but no proof of this conjecture has been fou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
