• The Nerve Impulse

    How do living things transmit electrical signals with equipment composed largely of water? Although there is disagreement on some features of the process, much has been learned about it

    Bernhard Katz| November 1, 1952|

  • Sleep

    The diurnal rhythm of man's life is significantly reflected in his physiology. To the physiologist the question of why we sleep is perhaps less interesting than why we stay awake

    Nathaniel Kleitman| November 1, 1952|

  • Photographic Development

    Although picture-making today is a highly refined art, chemists still do not fully understand the basic process whereby an image is formed and developed in an emulsion

    T. H. James| November 1, 1952|

  • Is there an Infinity?

    The great German mathematician Georg Cantor proved that, so far as mathematics is concerned, there is. Presenting a celebrated account of his ideas and their consequences

    Hans Hahn| November 1, 1952|

  • A Psychologist Examines 64 Eminent Scientists

    The present shortage of qualified scientific workers raises the question of how they are made. Some interesting answers are given by the techniques of modern psychological testing

    Anne Roe| November 1, 1952|

  • A New Era in Polio Research

    Until recently the virus that causes the disease was grown by the expensive and inconvenient procedure of inoculating monkeys with it. Now it can be cultivated in the test tube

    Joseph L. Melnick| November 1, 1952|

  • Client-Centered Psychotherapy

    In which a new approach to the treatment of troubled and neurotic people has led to an interesting series of objective studies in the effect of such treatment

    Carl R. Rogers| November 1, 1952|

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