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Maestro concertatore, the keyboard continuo player, who prepares singers and leads rehearsals. [ 2 ] Maestro direttore : the leader of the first violins of the orchestra (see concertmaster ), who may also have administrative duties such as hiring and paying musicians [ 3 ]
The roles of a conductor vary a great deal between different conducting positions and different ensembles. In some cases, a conductor will also be the musical director of the symphony, choosing the program for the entire season, including concerts by guest conductors, concerto soloists, pop concerts, and so on.
In electrostatics, a perfect conductor is an idealized model for real conducting materials. The defining property of a perfect conductor is that static electric field and the charge density both vanish in its interior. If the conductor has excess charge, it accumulates as an infinitesimally thin layer of surface charge. An external electric ...
Acclaimed maestro Leonard Bernstein was a guest conductor in Cincinnati on four occasions. And each time he caused a stir. Before Netflix’s ‘Maestro,’ Leonard Bernstein was ‘triple-threat ...
Continuous charge distribution. The volume charge density ρ is the amount of charge per unit volume (cube), surface charge density σ is amount per unit surface area (circle) with outward unit normal n̂, d is the dipole moment between two point charges, the volume density of these is the polarization density P.
where is the length of the conductor, measured in metres [m], A is the cross-section area of the conductor measured in square metres [m 2], σ is the electrical conductivity measured in siemens per meter (S·m −1), and ρ is the electrical resistivity (also called specific electrical resistance) of the material, measured in ohm-metres (Ω·m ...
The term 'music director' is more common in the US and Canada, whereas 'principal conductor' or 'chief conductor' is more prevalent elsewhere. In German-speaking countries, the title of General Music Director ( Generalmusikdirektor / Generalmusikdirektorin ) is used for conductors who are the music director of multiple musical institutions in a ...
The Meissner effect is sometimes confused with the kind of diamagnetism one would expect in a perfect electrical conductor: according to Lenz's law, when a changing magnetic field is applied to a conductor, it will induce an electric current in the conductor that creates an opposing magnetic field. In a perfect conductor, an arbitrarily large ...