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  2. Electron excitation - Wikipedia

    en.wikipedia.org/wiki/Electron_excitation

    A schematic of electron excitation, showing excitation by photon (left) and by particle collision (right) Electron excitation is the transfer of a bound electron to a more energetic, but still bound state.

  3. Excitation (magnetic) - Wikipedia

    en.wikipedia.org/wiki/Excitation_(magnetic)

    Except for permanent magnet generators, a generator produces output voltage proportional to the magnetic flux, which is the sum of flux from the magnetization of the structure and the flux proportional to the field produced by the excitation current.

  4. Exciton - Wikipedia

    en.wikipedia.org/wiki/Exciton

    An exciton is a bound state of an electron and an electron hole which are attracted to each other by the electrostatic Coulomb force resulting from their opposite charges. It is an electrically neutral quasiparticle regarded as an elementary excitation primarily in condensed matter, such insulators, semiconductors, some metals, and in some liquids.

  5. Excited state - Wikipedia

    en.wikipedia.org/wiki/Excited_state

    Atoms can be excited by heat, electricity, or light. The hydrogen atom provides a simple example of this concept.. The ground state of the hydrogen atom has the atom's single electron in the lowest possible orbital (that is, the spherically symmetric "1s" wave function, which, so far, has been demonstrated to have the lowest possible quantum numbers).

  6. Six Trump executive orders to watch - AOL

    www.aol.com/news/six-trump-executive-orders...

    What does the order say? The order calls for the Gulf of Mexico to "officially be renamed the Gulf of America". Trump can change the name of the Gulf on official US government documents.

  7. Trump Withdraws U.S. from World Health Organization - AOL

    www.aol.com/trump-withdraws-u-world-health...

    On his first day in office, President Donald Trump signed an executive order withdrawing the United States from the World Health Organization (WHO), a global coalition that responds to health issues

  8. Executive functions - Wikipedia

    en.wikipedia.org/wiki/Executive_functions

    The executive functions are among the last mental functions to reach maturity. This is due to the delayed maturation of the prefrontal cortex, which is not completely myelinated until well into a person's third decade of life. Development of executive functions tends to occur in spurts, when new skills, strategies, and forms of awareness emerge.

  9. Trump ordered the US to withdraw from the WHO. What ... - AOL

    www.aol.com/news/trump-ordered-us-withdraw-comes...

    President Trump issued an executive order late Monday night withdrawing the U.S. from the World Health Organization (WHO). This is the second time Trump has tried to pull the country out of the ...