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  2. Quantum dot - Wikipedia

    en.wikipedia.org/wiki/Quantum_dot

    where μ is the reduced mass, a is the radius of the quantum dot, m e is the free electron mass, m h is the hole mass, and ε r is the size-dependent dielectric constant. Although the above equations were derived using simplifying assumptions, they imply that the electronic transitions of the quantum dots will depend on their size.

  3. Surface roughness - Wikipedia

    en.wikipedia.org/wiki/Surface_roughness

    Misiuk et al., 2021 [32] Pollyea and Fairley, 2011 [33] Trevisani and Rocca, 2015 [34] Trevisani et al. 2023 [35] Woodcock, 1977 [36] Example of calculation of isotropic short-range surface roughness (Trevisani et al., 2023) for an alpine area. The calculation is based on a high resolution digital terrain model (2 m resolution).

  4. Titius–Bode law - Wikipedia

    en.wikipedia.org/wiki/Titius–Bode_law

    The Titius–Bode law was regarded as interesting, but of no great importance until the discovery of Uranus in 1781, which happens to fit into the series nearly exactly. Based on this discovery, Bode urged his contemporaries to search for a fifth planet. Ceres, the largest object in the asteroid belt, was found at Bode's predicted position in 1801.

  5. COVID-19 testing - Wikipedia

    en.wikipedia.org/wiki/COVID-19_testing

    As of 2021, the most common form of molecular test is the reverse transcription polymerase chain reaction (RT-PCR) test. [21] Other methods used in molecular tests include CRISPR , isothermal nucleic acid amplification , digital polymerase chain reaction , microarray analysis , and next-generation sequencing .