144,986 research outputs found

    A Wave-centric View of Special Relativity

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    An approach to special relativity is outlined which emphasizes the wave and field mechanisms which physically produce the relativistic effects, with the goal of making them seem more natural to students by connecting more explicitly with prior studies of waves and oscillators

    [Review of] Jon Michael Spencer. Sacred Symphony: The Chanted Sermon of the Black Preacher

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    In his latest book to date, Sacred Symphony; The Chanted Sermon of the Black Preacher, Spencer states in the introduction that there are seven musical elements that make up the chanted sermon and these include melody, rhythm, call and response, harmony, counterpoint, form, and improvisation. He not only states that these musical components appear in the chanted sermons, but he illustrates how they are manifested in the sermon event through sermons and/or testimonies of white male and female observers, ex-slaves, ministers, and scholars of black preaching

    The Persistence of Ethnicity in African American Popular Music: A Theology of Rap Music

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    The racial oppression of black people in many ways has fueled and shaped black musical forms in America. One example is the blues which originated in the rural South among poor, nonliterate, agrarian African Americans.[1] In the North the music became more formalized, and singers such as Gertrude Ma Rainey, Bessie Smith, Mamie Smith, Ida Cox, and Sarah Martin became known as the queens of the classic blues. Another musical genre is jazz, which was largely based on the twelve-bar blues harmonic structure and phrasing. It was more polished than the earlier New Orleans jazz at the turn of the century, and its major influences came from New York City, Chicago, and Kansas City. Finally, on the religious front, gospel music was in its early stages of development around the time early blues was evolving. Influenced by blues and jazz, gospel was revolutionary (and controversial) in its combination of drums and fast, rocking rhythms

    [Review of] Allen L. Woll and Randall M. Miller. Ethnic and Racial Images in American Film and Television: Historical Essays and Bibliography

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    Allen Woll and Randall Miller in Ethnic and Racial Images in American Film and Television have compiled in one volume the writings about the images of ethnic and racial groups in American television and film. Woll and Miller state in their Introduction that the purpose of their book was to attempt to unite the work (the nature and importance of mass media stereotypes and their effects on society) from a wide variety of disciplines, languages and fields of study in order to expand the vistas of scholarly research in this area. Ethnic and Racial Images is divided into twelve chapters, with each considering specific ethnic or racial groups: (in alphabetical order) Afro-Americans, Arabs, Asians, East Europeans and Russians, Germans, Hispanic Americans, Irish, Italians, Jews, and Native Americans. The first chapter is a general overview of the subject of racial and ethnic images and the final chapter is a kind of miscellaneous section entitled Others which includes Africans, Armenians, Dutch, East Indians, Greeks, Hawaiians, Louisiana Cajuns, Norwegians, Swedes, and Turks

    Notes on Insect Injection, Anesthetization, and Bleeding.

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    (excerpt) In recent years there has been a burgeoning interest in insect cytogenetics, sometimes involving in vivo cultures of haematocytes for chromosomal analysis. Mitotic poisons, such as colchicine (Tyrkus, 1971), are commonly injected to produce metaphase plates. Likewise, injection of toxins is now common-place in applied insect research. However, surprisingly little general information on injection is available in the literature. The dictates of morphology determine the gross procedure to be used. The kind of needle and syringe, the amount of fluid to be administered, and the necessity of optical aids are a function of the size of the insect recipient. Once these decisions are made, other considerations must still be weighed, including comparative exoskeletal toughness and the insect\u27s stage of development, which are important in determining possible areas for needle penetration
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