In quantum mechanics, an excited state of a system (such as an atom, molecule or nucleus) is any quantum state of the system that has a higher energy than the ground state (that is, more energy than the absolute minimum). Excitation refers to an increase in energy level above a chosen starting point, usually the ground state, but sometimes an already excited state. The temperature of a group of particles is indicative of the level of excitation (with the notable exception of systems that exhibit negative temperature).
The lifetime of a system in an excited state is usually short: spontaneous or induced emission of a quantum of energy (such as a photon or a phonon) usually occurs shortly after the system is promoted to the excited state, returning the system to a state with lower energy (a less excited state or the ground state). This return to a lower energy level is often loosely described as decay and is the inverse of excitation.
Long-lived excited states are often called metastable. Long-lived nuclear isomers and singlet oxygen are two examples of this.

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  1. C

    Yung excited ka sumahod

  2. C

    Yung excited ka buksan

  3. T


    Tignan niyo fb page nila pwede na ma wí†hdráw starting oct.25 baka papaldo na kayo Sa mga wala pa ito 👇 Recharge kayo $20 para mas madali talgaa maka earn pagsamantalahin niyona habang bago pa,baka ito kapalit ni LOC!! Hidden content
  4. K

    Are you excited as well?

    Early reactions to the live-action adaptation of One Piece are overwhelmingly positive, with critics and fans praising it as a faithful and thrilling adaptation of the original manga. Nung nabasa ko yung mga reactions nila talagang lalo ako naging hype para sa show na 'to. Are you excited as well?
  5. A

    Masyado kang excited!

    Lapit nman syang kumanta one month nlang ber na ctto🫡
  6. B

    Closed Ginagawgaw mo SLOT?

    Hidden contentHidden content
  7. G


  8. M

    Closed Excited

    :)back to school na mga ka ph...:):)
  9. J

    Closed Hintay lang para maging established hahaha

    Malapit na akong maging established..
  10. P

    Closed Newbie

    guys newbie lng po penge nman po ng link ng new globobo no load no promo needed thanks po
  11. S

    Closed Excited na ko maging established.

    Excited na ko maging established.:):):) hahaha
  12. D

    Closed Sana dati ko pang nadiskobre tong phcorner

    Actually nadiskobre ko lang tong website na to sa paghahanap ng tutorial kung paano mag-openline ng wifi hanggang sa nagbasa ako ng mga interesting topics tapos naparegister na ako ng account. I can't wait to be an established member dahil alam kong maraming surprises na naghihintay sa akin.:)
  13. I

    Closed Medyo excited

    luh 33 messages na ko din parin established? nyahahaha #excited konti
  14. A

    Closed Feeling excited to see my profile pic soon.

  15. N

    hello po.

    bago lang po ako... sa na welcome po ako dito... gumala na ng kaunti naexcite lang po.