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  2. Manifest and latent functions and dysfunctions - Wikipedia

    en.wikipedia.org/wiki/Manifest_and_latent...

    Manifest functions are the consequences that people see, observe or even expect. It is explicitly stated and understood by the participants in the relevant action. The manifest function of a rain dance, according to Merton in his 1957 Social Theory and Social Structure, is to produce rain, and this outcome is intended and desired by people participating in the ritual.

  3. Thorium fuel cycle - Wikipedia

    en.wikipedia.org/wiki/Thorium_fuel_cycle

    The chance of fissioning on absorption of a thermal neutron is about 92%; the capture-to-fission ratio of 233 U, therefore, is about 1:12 – which is better than the corresponding capture vs. fission ratios of 235 U (about 1:6), or 239 Pu or 241 Pu (both about 1:3).

  4. Four factor formula - Wikipedia

    en.wikipedia.org/wiki/Four_factor_formula

    The multiplication factor, k, is defined as (see Nuclear chain reaction): = If k is greater than 1, the chain reaction is supercritical, and the neutron population will grow exponentially.

  5. Valley of stability - Wikipedia

    en.wikipedia.org/wiki/Valley_of_stability

    These nuclides tend to be unstable to β + decay or electron capture, since such decay converts a proton to a neutron. The decay serves to move the nuclides toward a more stable neutron-proton ratio. On the other side of the valley of stability, this ratio is large, corresponding to an excess of neutrons over protons in the nuclides.

  6. Fission barrier - Wikipedia

    en.wikipedia.org/wiki/Fission_Barrier

    An induced fission reaction. An excited nucleus splits into lighter elements (fission products), releasing neutrons and prompt gamma radiation, followed by the beta decay of the lighter nuclei and more gamma rays. [1] In nuclear physics and nuclear chemistry, the fission barrier is the activation energy required for a nucleus of an atom to ...

  7. Beta decay - Wikipedia

    en.wikipedia.org/wiki/Beta_decay

    The two types of beta decay are known as beta minus and beta plus.In beta minus (β −) decay, a neutron is converted to a proton, and the process creates an electron and an electron antineutrino; while in beta plus (β +) decay, a proton is converted to a neutron and the process creates a positron and an electron neutrino. β + decay is also known as positron emission.

  8. Direct energy conversion - Wikipedia

    en.wikipedia.org/wiki/Direct_energy_conversion

    The first experiments used beams of positives and negatives as fuel, and demonstrated energy capture at a peak efficiency of 65 percent and a minimum efficiency of 50 percent. [7] [8] The following experiments involved a true plasma direct converter that was tested on the Tandem Mirror Experiment (TMX), an operating magnetic mirror fusion reactor.

  9. Macrosociology - Wikipedia

    en.wikipedia.org/wiki/Macrosociology

    Moreover, each part of society exists because it has a specific function to perform in contributing to the society as a whole. As such, societies tend toward a state of equilibrium or homeostasis, and if there is a disturbance in any part of the society then the other parts will adjust to restore the stability of the society as a whole. [4]