TY - CHAP A1 - Sture Nordholm A2 - George B. Bacskay ED1 - Ion I. Cotaescu Y1 - 2012-02-15 PY - 2012 T1 - The Role of Quantum Dynamics in Covalent Bonding – A Comparison of the Thomas-Fermi and Hückel Models N2 - The quantum theory is the first theoretical approach that helps one to successfully understand the atomic and sub-atomic worlds which are too far from the cognition based on the common intuition or the experience of the daily-life. This is a very coherent theory in which a good system of hypotheses and appropriate mathematical methods allow one to describe exactly the dynamics of the quantum systems whose measurements are systematically affected by objective uncertainties. Thanks to the quantum theory we are able now to use and control new quantum devices and technologies in quantum optics and lasers, quantum electronics and quantum computing or in the modern field of nano-technologies. BT - Advances in Quantum Theory SP - Ch. 5 UR - https://doi.org/10.5772/36698 DO - 10.5772/36698 SN - PB - IntechOpen CY - Rijeka Y2 - 2021-10-27 ER -