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Matrix mechanics

Matrix mechanics
Matrix mechanics is a formulation of quantum mechanics created by Werner Heisenberg, Max Born, and Pascual Jordan in 1925. In some contrast to the wave formulation, it produces spectra of energy operators by purely algebraic, ladder operator, methods.[1] Relying on these methods, Pauli derived the hydrogen atom spectrum in 1926,[2] before the development of wave mechanics. Development of matrix mechanics[edit] In 1925, Werner Heisenberg, Max Born, and Pascual Jordan formulated the matrix mechanics representation of quantum mechanics. Epiphany at Helgoland[edit] In 1925 Werner Heisenberg was working in Göttingen on the problem of calculating the spectral lines of hydrogen. "It was about three o' clock at night when the final result of the calculation lay before me. The Three Fundamental Papers[edit] After Heisenberg returned to Göttingen, he showed Wolfgang Pauli his calculations, commenting at one point:[4] In the paper, Heisenberg formulated quantum theory without sharp electron orbits. W.

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Second death The second death is an eschatological concept in Judaism and Christianity related to punishment after a first, natural, death. Judaism[edit] Although the term is not found in the Hebrew Bible, Sysling in his study (1996) of Teḥiyyat ha-metim (Hebrew; "resurrection of the dead") in the Palestinian Targums identifies a consistent usage of the term "second death" in texts of the Second Temple period and early Rabbinical writings. In most cases this "second death" is identical with the judgment, following resurrection, in Gehinnom at the Last Day.[1] Targum Deuteronomy[edit] In Targum Neofiti (Neof.) and the fragments (FTP and FTV) the "second death" is the death the wicked die.[2]

Finite potential well The finite potential well (also known as the finite square well) is a concept from quantum mechanics. It is an extension of the infinite potential well, in which a particle is confined to a box, but one which has finite potential walls. Unlike the infinite potential well, there is a probability associated with the particle being found outside the box. The quantum mechanical interpretation is unlike the classical interpretation, where if the total energy of the particle is less than potential energy barrier of the walls it cannot be found outside the box. In the quantum interpretation, there is a non-zero probability of the particle being outside the box even when the energy of the particle is less than the potential energy barrier of the walls (cf quantum tunnelling). Particle in a 1-dimensional box[edit]

Interpretations of quantum mechanics An interpretation of quantum mechanics is a set of statements which attempt to explain how quantum mechanics informs our understanding of nature. Although quantum mechanics has held up to rigorous and thorough experimental testing, many of these experiments are open to different interpretations. There exist a number of contending schools of thought, differing over whether quantum mechanics can be understood to be deterministic, which elements of quantum mechanics can be considered "real", and other matters. This question is of special interest to philosophers of physics, as physicists continue to show a strong interest in the subject. They usually consider an interpretation of quantum mechanics as an interpretation of the mathematical formalism of quantum mechanics, specifying the physical meaning of the mathematical entities of the theory. History of interpretations[edit]

Old Earth creationism Old Earth creationism is an umbrella term for a number of types of creationism, including gap creationism, progressive creationism, and evolutionary creationism.[1] Old Earth creationism is typically more compatible with mainstream scientific thought on the issues of physics, chemistry, geology and the age of the Earth, in comparison to young Earth creationism.[2] Types of old Earth creationism[edit] Gap creationism[edit] Gap creationism states that life was immediately and recently created on a pre-existing old Earth. One variant rests on a rendering of Genesis 1:1-2 as: Particle in a box In quantum mechanics, the particle in a box model (also known as the infinite potential well or the infinite square well) describes a particle free to move in a small space surrounded by impenetrable barriers. The model is mainly used as a hypothetical example to illustrate the differences between classical and quantum systems. In classical systems, for example a ball trapped inside a large box, the particle can move at any speed within the box and it is no more likely to be found at one position than another. However, when the well becomes very narrow (on the scale of a few nanometers), quantum effects become important. The particle may only occupy certain positive energy levels. Likewise, it can never have zero energy, meaning that the particle can never "sit still".

Schrödinger equation In quantum mechanics, the Schrödinger equation is a partial differential equation that describes how the quantum state of some physical system changes with time. It was formulated in late 1925, and published in 1926, by the Austrian physicist Erwin Schrödinger.[1] In classical mechanics, the equation of motion is Newton's second law, and equivalent formulations are the Euler–Lagrange equations and Hamilton's equations. All of these formulations are used to solve for the motion of a mechanical system and mathematically predict what the system will do at any time beyond the initial settings and configuration of the system. In quantum mechanics, the analogue of Newton's law is Schrödinger's equation for a quantum system (usually atoms, molecules, and subatomic particles whether free, bound, or localized). It is not a simple algebraic equation, but (in general) a linear partial differential equation.

Young Earth creationism Young Earth Creationism (YEC) is the religious belief[1] that the Universe, Earth and all life on Earth were created by direct acts of the Abrahamic God during a relatively short period, between 5,700 and 10,000 years ago.[2] Its primary adherents are those Christians and Jews[3] who, using a literal interpretation of the Genesis creation narrative as a basis, believe that God created the Earth in six 24-hour days.[4][5] Young Earth Creationists differ from other creationists in that they believe in a strict-literal interpretation of the Bible regarding the age of the Earth. This contrasts with Old Earth Creationists, who believe that the Book of Genesis may be interpreted metaphorically and who accept the scientifically determined age of Earth and the universe.[6] Since the mid-20th century, young Earth Creationists starting with Henry M.

Solution of Schrödinger equation for a step potential In quantum mechanics and scattering theory, the one-dimensional step potential is an idealized system used to model incident, reflected and transmitted matter waves. The problem consists of solving the time-independent Schrödinger equation for a particle with a step-like potential in one dimension. Typically, the potential is modelled as a Heaviside step function. Density matrix Explicitly, suppose a quantum system may be found in state with probability p1, or it may be found in state with probability p2, or it may be found in state with probability p3, and so on. The density operator for this system is[1] By choosing a basis

Creation of man from clay Fashioning a man out of clay According to Genesis 2:7 "And the Lord God formed man of the dust of the ground, and breathed into his nostrils the breath of life; and man became a living soul."According to the Qur'an[23:12–15], God created man from clay.According to greek mythology (see Hesiod's poem Theogeny), Prometheus created man from clay, while Athena breathed life into them.According to Chinese mythology (see Chu Ci and Imperial Readings of the Taiping Era), Nüwa molded figures from the yellow earth, giving them life and the ability to bear children.According to Egyptian mythology the god Khnum creates human children from clay before placing them into their mother's womb. انا خلقنا الانسان من صلصال من حمإ مسنون reference from sour at alhijer holy Quran