Cathode Ray - History

History

After the 1690 invention of the vacuum pump by Otto von Guericke, physicists began to experiment with passing high voltage electricity through rarefied air. In 1705, it was noted that electrostatic generator sparks travel a longer distance through low pressure air than through atmospheric pressure air.

Read more about this topic:  Cathode Ray

Famous quotes containing the word history:

    [Men say:] “Don’t you know that we are your natural protectors?” But what is a woman afraid of on a lonely road after dark? The bears and wolves are all gone; there is nothing to be afraid of now but our natural protectors.
    Frances A. Griffin, U.S. suffragist. As quoted in History of Woman Suffrage, vol. 4, ch. 19, by Susan B. Anthony and Ida Husted Harper (1902)

    This above all makes history useful and desirable: it unfolds before our eyes a glorious record of exemplary actions.
    Titus Livius (Livy)

    The history of every country begins in the heart of a man or a woman.
    Willa Cather (1876–1947)