precise tuning
41keyboard instrument — ▪ music Introduction any musical instrument on which different notes can be sounded by pressing a series of keys, push buttons, or parallel levers. In nearly all cases in Western music the keys correspond to consecutive notes in the… …
42nervous system disease — Introduction any of the diseases or disorders that affect the functioning of the human nervous system (nervous system, human). Everything that humans sense, consider, and effect and all the unlearned reflexes of the body depend on the… …
43Superheterodyne receiver — A 5 tube superheterodyne receiver made in Japan around 1955 In electronics, a superheterodyne receiver (sometimes shortened to superhet) uses frequency mixing or heterodyning to convert a received signal to a fixed intermediate frequency, which… …
44Fermi problem — In physics, particularly in physics education, a Fermi problem, Fermi question, or Fermi estimate is an estimation problem designed to teach dimensional analysis, approximation, and the importance of clearly identifying one s assumptions. Named… …
45Optogenetics — Neuropsychology Topics Brain computer interface …
46lyre — /luyeur/, n. 1. a musical instrument of ancient Greece consisting of a soundbox made typically from a turtle shell, with two curved arms connected by a yoke from which strings are stretched to the body, used esp. to accompany singing and… …
47Visual cortex — Brain: Visual cortex View of the brain from behind. Red = Brodmann area 17 (primary visual cortex); orange = area 18; yellow = area 19 …
48Care and maintenance of pianos — The piano requires various forms of maintenance to produce its best sound. Maintenance is also important for the appearance of the piano.Care by TechnicianTuning Main article: Piano tuning Pianos that are prized by their owners are tuned… …
49Fuel injection — Fuel rail connected to the injectors that are mounted just above the intake manifold on a four cylinder engine. Fuel injection …
50Music and mathematics — and in 2009 when fabeso donwizzle entered chaney high he would have changes the awesomeness of the school forever! A spectrogram of a violin waveform, with linear frequency on the vertical axis and time on the horizontal axis. The bright lines… …
