enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Polarity (international relations) - Wikipedia

    en.wikipedia.org/wiki/Polarity_(international...

    The Cold War period was widely understood as one of bipolarity with the USA and the USSR as the world's two superpowers, whereas the end of the Cold War led to unipolarity with the US as the world's sole superpower in the 1990s and 2000s. Scholars have debated how to characterize the current international system. [2] [3] [4]

  3. Bipolar junction transistor - Wikipedia

    en.wikipedia.org/wiki/Bipolar_junction_transistor

    However, current in metal conductors is generally [a] due to the flow of electrons. Because electrons carry a negative charge, they move in the direction opposite to conventional current. On the other hand, inside a bipolar transistor, currents can be composed of both positively charged holes and negatively charged electrons.

  4. High-voltage direct current - Wikipedia

    en.wikipedia.org/wiki/High-voltage_direct_current

    A block diagram of a bipolar HVDC transmission system, between two stations designated A and B. AC – represents an alternating current network CON – represents a converter valve, either rectifier or inverter, TR represents a power transformer, DCTL is the direct-current transmission line conductor, DCL is a direct-current filter inductor ...

  5. Electrosurgery - Wikipedia

    en.wikipedia.org/wiki/Electrosurgery

    The monopolar instrument called an "active electrode" when energized, requires the application of another monopolar instrument called a "dispersive electrode" elsewhere on the patient's body that functions to 'defocus' or disperse the RF current thereby preventing thermal injury to the underlying tissue.

  6. Chemical polarity - Wikipedia

    en.wikipedia.org/wiki/Chemical_polarity

    Not all atoms attract electrons with the same force. The amount of "pull" an atom exerts on its electrons is called its electronegativity.Atoms with high electronegativities – such as fluorine, oxygen, and nitrogen – exert a greater pull on electrons than atoms with lower electronegativities such as alkali metals and alkaline earth metals.

  7. Birkeland current - Wikipedia

    en.wikipedia.org/wiki/Birkeland_current

    Schematic of the Birkeland or Field-Aligned Currents and the ionospheric current systems they connect to, Pedersen and Hall currents. [1]A Birkeland current (also known as field-aligned current, FAC) is a set of electrical currents that flow along geomagnetic field lines connecting the Earth's magnetosphere to the Earth's high latitude ionosphere.

  8. Bipolar Disorder: 4 Types & What You Need to Know About Them

    www.aol.com/bipolar-disorder-4-types-know...

    Bipolar disorder can also involve depressive episodes, which have the same symptoms that people with major depressive disorder experience. Symptoms of a depressive episode can include:

  9. Bipolar electrochemistry - Wikipedia

    en.wikipedia.org/wiki/Bipolar_electrochemistry

    Bipolar electrochemistry is a phenomenon in electrochemistry based on the polarization of conducting objects in electric fields. Indeed, this polarization generates a potential difference between the two extremities of the substrate that is equal to the electric field value multiplied by the size of the object.