What is difference Between Normal polarity&Micro polarity?

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  • 1 decade ago
    Favourite answer

    The terms refer to the direction of earth's magnetic field. The earth has a field very much like a standard bar magnet, with a north and a south magnetic pole. Unlike a bar magnet, whose field is locked into the solid crystals of the magnet, the earth's field is generated by moving molten iron in the outer core. This motion is very complex and at times, the

    complexity results in the north and south end of the earth's field trading places. It's as if you turned the bar magnet upside down, but did it without actually moving the bulk of the earth (your compass's north needle would point to Antarctica instead of Siberia). This happens at time intervals of a few hundred thousand years to tens of millions of years and

    is not at all periodic or cyclical.

    Because the current situation is what humans have always known, we call it NORMAL polarity (North magnetic pole near north geographic pole). The opposite situation is known as REVERSED polarity (north magnetic pole near

    south geographic pole).

  • sb
    Lv 7
    1 decade ago

    Normal Polarity :

    The terms refer to the direction of earth's magnetic field. The earth has a field very much like a standard bar magnet, with a north and a south magnetic pole. Unlike a bar magnet, whose field is locked into the solid crystals of the magnet, the earth's field is generated by moving molten iron in the outer core. This motion is very complex and at times, the

    complexity results in the north and south end of the earth's field trading places. It's as if you turned the bar magnet upside down, but did it without actually moving the bulk of the earth (your compass's north needle would point to Antarctica instead of Siberia). This happens at time intervals of a few hundred thousand years to tens of millions of years and

    is not at all periodic or cyclical.

    Because the current situation is what humans have always known, we call it NORMAL polarity (North magnetic pole near north geographic pole).

    Micro polarity :

    It has been found that organic dyes such as thymol blue, dimidium bromide and methyl orange which are not soluble in pure supercritical CO, could be conveniently solubilized in AOT water-in-CO reverse microemulsions with 2,2,3,3,4,4,5,5-octafluoro-1-pentanol as co-surfactant. The solubilities of these organic dyes in the microemulsions were measured successfully by using a UV-Vis spectroscopy method newly established in our laboratory; besides that, for a given temperature, a critical micelle pressure (CMP) at which formation of AOT water-in-CO[2] reverse micelles starts, was determined in term of the effect of pressure on the absorption intensity of the organic dyes in the microemulsions. Furthermore, the micro-polarity environment of the AOT water-in-CO[2]reverse microemulsions was investigated systematically according to the shift of solvatochromic probes such as methyl orange and dimidium bromide with varying water content by using UV-Vis spectroscopy.

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