https://sandromagri.info/en/phys/quantum/index.htmlA conceptual and popular introduction to Quantum Physics Quantum Physics Map No one understands QM Instructions for useHugoensandro@freenetst.it (Sandro Magrì)sandro@freenetst.it (Sandro Magrì)2020- All rights reserved.https://sandromagri.info/en/phys/quantum/010-intro1/index.htmlMon, 01 Jan 0001 00:00:00 +0000sandro@freenetst.it (Sandro Magrì)https://sandromagri.info/en/phys/quantum/010-intro1/index.htmlRichard P. Feynman " … many people … understood, in one way or another, the Theory of Relativity .. i can confidently state that no one yet understands Quantum Mechanics “¹ (Richard Feynman)² Foreword No one understands quantum mechanics for Feynman and the most important physicists of the 20th century So let’s put our hands together and say that there is nothing to worry about if the sequel turns out to be incomprehensible. A genius like Einstein never accepted Quantum Mechanics, and never really wanted to understand it. Like other founding fathers of the new physics he belonged to a small dissident minority. Prof. Mermin summed up in two words (Shut up and calculate) the attitude of 99% of scientists and the so-called Copenhagen Interpretation (Bohr, Heisenberg, Born, Pauli, …) of quantum theory: no matter if it seems absurd, strange, contrary to intuition and common sense, Quantum Mechanics works too well to be wrong, it is the correct description of nature at the microscopic level … The scientist should not be interested in its deeper meaning and philosophical implications, the only things that really matter are mathematical calculations, accuracy of theoretical predictions, agreement with experimental results and brilliant practical applicationshttps://sandromagri.info/en/phys/quantum/020-intro2/index.htmlMon, 01 Jan 0001 00:00:00 +0000sandro@freenetst.it (Sandro Magrì)https://sandromagri.info/en/phys/quantum/020-intro2/index.htmlquantum theory and mathematical language In the immortal words of Galileo Galilei, the greatest Italian writer and intellectual of all time, “the book of nature is written in mathematical language”, anticipated by Leonardo da Vinci, “O scholars, study mathematics, and do not build without foundations”. One cannot help but admire “the unreasonable effectiveness of mathematics in the natural sciences” that Nobel laureate Eugene Wigner always marveled at. And to quote Feynman again (The Physical Law, ch.2): “To those who do not know mathematics, it is difficult to get an idea of the beauty, the deeper beauty, of nature. … If you want to know nature, to appreciate nature, you must understand the language in which it speaks.”