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Bori, Lucrezia

(Encyclopedia)Bori, Lucrezia bôˈrē [key], 1887–1960, Spanish soprano, whose real name was Borja (Ital. Borgia). She made her debut (1908) in Rome as Micaela in Carmen, later sang Manon Lescaut opposite Caruso ...

sonic boom

(Encyclopedia)CE5 Sonic boom wave pattern from a supersonic aircraft and variation in pressure sonic boom, shock wave produced by an object moving through the air at supersonic speed, i.e., faster than the spee...

Eton

(Encyclopedia)Eton ēˈtən [key], town, Windsor and Maidenhead, central England, on the Thames River. It i...

Ponselle, Rosa

(Encyclopedia)Ponselle, Rosa pŏnzĕlˈ [key], 1897–1981, American operatic soprano, b. Meriden, Conn. First appearing in vaudeville, she made her debut (1918) at the Metropolitan Opera in Verdi's La forza del de...

Lem, Stanisław

(Encyclopedia)Lem, Stanisław stänˈĭswäfˌ lĕm [key], 1921–2006, Polish science-fiction writer. A doctor by training, Lem began his writing career as a poet before turning to the novel. In his many science-f...

Te Kanawa, Dame Kiri

(Encyclopedia)Te Kanawa, Dame Kiri tā käˈnəwə [key], 1944–, New Zealand opera and concert singer. From the early 1970s until her last public performance (2016), she was one of the most acclaimed and popular ...

countertenor

(Encyclopedia)countertenor, a male singing voice in the alto range. Singing in this range requires either a special vocal technique called falsetto, or a high extension of the tenor range. Countertenors were requir...

Hamer, Fannie Lou

(Encyclopedia)Hamer, Fannie Lou, 1917–1977, U.S. voting rights activist and civil rights leader, b. Montgomery County, Miss. Fannie Lou Hamer was the first woman fr...

will, in law

(Encyclopedia)will, in law, document expressing the wishes of a person (known as a testator) concerning the disposition of her property after her death. If a person dies intestate, i.e., without a valid will, statu...

shock wave

(Encyclopedia)shock wave, wave formed of a zone of extremely high pressure within a fluid, especially the atmosphere, that propagates through the fluid at a speed in excess of the speed of sound. A shock wave is ca...