activation energy definition

  • noun:
    • the vitality necessary to start a reaction. As an example, the fire from fuse of a firecracker provides a little preliminary amount of energy, after which it the explosive response continues on it's own, releasing a considerably bigger quantity of energy. A little push directed at a stable but top-heavy item may cause it to-fall over; the possibility power introduced through the autumn ended up being present in the device all along but could not be understood provided the item ended up being upright and balanced.
    • the energy that an atomic system must get before an activity (like an emission or effect) can happen

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