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Definition of Activation energy
1. Noun. The energy that an atomic system must acquire before a process (such as an emission or reaction) can occur. "Catalysts are said to reduce the energy of activation during the transition phase of a reaction"
Definition of Activation energy
1. Noun. (chemistry physics) The energy required to initiate a reaction. For example, the flame from the fuse of a firecracker provides a small initial amount of energy, after which the explosive reaction proceeds by itself, releasing a considerably larger quantity of energy. A small push given to a stable but top-heavy object may cause it to fall over; the potential energy released during the fall was present in the system all along but could not be realized as long as the object was upright and balanced. ¹
¹ Source: wiktionary.com
Medical Definition of Activation energy
1.
Lexicographical Neighbors of Activation Energy
Literary usage of Activation energy
Below you will find example usage of this term as found in modern and/or classical literature:
1. Journal of the American Chemical Society by American Chemical Society (1879)
"Assuming no activation energy for the reverse reaction, the bond dissociation
energy should be approximately the activation energy for the fragmentation ..."
2. Permafrost: North American Contribution [to The] Second International Conference by Building Research Advisory Board Staff (1973)
"However, if ionic mobility increases because of changes in the structure of
interfacial water, the activation energy should decrease. ..."
3. Permafrost: Second International Conference, July 13-28, 1973 : USSR by Frederick J. Sanger, Peter J. Hyde (1978)
"The energy required for tearing the particle out of the "potential well" is called
the "activation energy." When heating a material, the mean kinetic energy ..."
4. Morbid Fears and Compulsions: Their Psychology and Psychoanalytic Treatment by Horace Westlake Frink (1918)
"... state as soon as the activation-energy was withdrawn.1 ... and "activation-energy"
instead of "occupation" and "occupation-energy" ..."
5. Nuclear Production of Hydrogen: First Information Exchange Meeting, Paris by OECD Nuclear Energy Agency (2001)
"Radiolysis activation energy introduced from fission spikes or from any ionising
radiation is capable of breaking the chemical bonds, depending on their ..."
6. Exploring Organic Environments in the Solar System by National Research Council (U.S.) (2007)
"The reaction with hydrogen atoms has no activation energy because hydrogen atoms
can tunnel through the activation barriers on the mantle surface. ..."
7. Fission Gas Behaviour in Water Reactor Fuels: Seminar Proceedings, Cadarache by OECD Nuclear Energy Agency (2002)
"The activation energy for diffusion and the pre-exponential coefficient were
adjusted so that the model may fit well the experimental results (Figure 9). ..."
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