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Atomic Theory: Erwin Schrodinger
Transcript of Atomic Theory: Erwin Schrodinger
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According to Walter J. Moore, Lorentz objected that Schrodinger did not include the Electron field in his wave function . Schrodinger countered that, his theory eleminated purpose of having an electron particle revolving around a nucleus, that one “can be readily satisfied that only the term for the nuclear charge appears.”
Hereafter, as assistant to Franz Exner, He conducted practical work for students (without himself, as he said, learning what experimenting was). During the First World War he served as an artillery officer.
One of the people whom criticized Schrodinger’s work was Hendrik Lorentz. Lorentz pointed out that a wave packets travelling through space would separate, and wouldn't be able to keep the form of a tiny particle.
Lorentz also said that the area of the Electron energy around the Hydrogen atom wasn't large enough to sustain a wave packet, because a wave packet would need a very large range compared to its wavelength which is larger than the Hydrogen atom can provide. Basically Lorentz believed that the Hydrogen atom couldn't offer the wavelength vibrations short enough for wave packet construction.
1905 – Albert Einstein: theory of special relativity, explanation of Brownian motion, and photoelectric effect
1906 – Walther Nernst: Third law of thermodynamics
1909 – Fritz Haber: Haber Process and also the Oil drop experiment by Robert Andrews Millikan to determine the charge on an electron
1911 – Ernest Rutherford: Atomic nucleus
1911 – Heike Kamerlingh Onnes: Superconductivity
1912 – Alfred Wegener: Continental drift
1912 – Max von Laue : x-ray diffraction
1913 – Henry Moseley: defined atomic number
1913 – Niels Bohr: Model of the atom
1915 – Albert Einstein: theory of general relativity – also David Hilbert
1915 – Karl Schwarzschild: discovery of the Schwarzschild radius leading to the identification of black holes
1918 – Emmy Noether: Noether's theorem – conditions under which the conservation laws are valid
1920 – Arthur Eddington: Stellar nucleosynthesis
1924 – Wolfgang Pauli: quantum Pauli exclusion principle
1924 – Edwin Hubble: the discovery that the Milky Way is just one of many galaxies
1925 – Erwin Schrödinger: Schrödinger equation (Quantum mechanics)
1927 – Werner Heisenberg: Uncertainty principle (Quantum mechanics)
1927 – Georges Lemaître: Theory of the Big Bang
1928 – Paul Dirac: Dirac equation (Quantum mechanics)
1929 – Edwin Hubble: Hubble's law of the
1929 – Lars Onsager's reciprocal relations, a potential fourth law of thermodynamics
1932 – James Chadwick: Discovery of the neutron
1934 – Clive McCay: Calorie Restriction extends the maximum lifespan of another species Calorie Restriction research history
1938 – Otto Hahn, Lise Meitner and Fritz Strassmann: Nuclear fission
1943 – Oswald Avery proves that DNA is the genetic material of the chromosome
1947 – William Shockley, John Bardeen and Walter Brattain invent the first transistor
1948 – Claude Elwood Shannon: 'A mathematical theory of communication' a seminal paper in Information theory.
1948 – Richard Feynman, Julian Schwinger, Sin-Itiro Tomonaga and Freeman Dyson: Quantum electrodynamics
1951 – George Otto Gey propagates first cancer cell line, HeLa
1952 – Jonas Salk: developed and tested first polio vaccine
1953 – Crick and Watson: helical structure of DNA, basis for molecular biology
Mississippi becomes the first state to incorporate requiring a literacy test as a qualification for voting, but to ensure uneducated whites could still vote, a grandfather clause is enacted that means any voter or descendent who had the right to vote prior to 1866 could still vote without the literacy test as a qualification.
December 30, 1924 Edwin Hubble discovers that the Milky Way is one of many galaxies after discovering that the spiral nebula Andromeda is actually a galaxy. Before he had made this discovery, we thought that our galaxy contained almost everything in existence. He went about this discovery by using Leavitt's formula, which allows you to measure distance by observing fluctuations in light from the stars and found that the star system was 860,000 light years away, and so could not be a part of the Milky Way Galaxy, and was a separate galaxy.
All this time Schrodinger continued his research and published many papers on a variety of topics, including the problem of unifying gravitation and electromagnetism, which also absorbed Einstein and which is still unsolved; he was also the author of the well-known little book "What is Life?", 1944. He remained greatly interested in the foundations of atomic physics. Schrodinger disliked the generally accepted dual description in terms of waves and particles, with a statistical interpretation for the waves, and tried to set up a theory in terms of waves only. This led him into controversy with other leading physicists.
Designed by: Markel Baxter
384 B.C.-322 B.C.
460 B.C.-370 B.C.
Isaac Newton proposed a mechanical universe with small solid masses in motion. He is very significant because he created the laws of motion and progressed physics.
Proposed an atomic theory about spherical atoms based on measurable properties of mass. He also found that atoms of different elements were different, whilst atoms of the same element were the same. His theories were very similar to the theories Democritus had made over 2,000 years before.
Michael Faraday studied the effects of electricity on on solutions (electrolysis). By splitting molecules with electricity, he developed the laws of electrolysis. Electrolysis is the use of electricity to drive a reaction that is otherwise not spontaneous.
Arranged elements into 7 groups according to their properties (atomic weight).
Democritus was a Greek philosopher who came up with the idea that all matter is composed of tiny particles known as atoms. He stated that they are indivisible, indestructible, and cannot be created. This idea was revolutionary for his time, as it was mostly correct and his idea of the composition of the atom is surprisingly close to the modern representation, even though he hadn't done tests or had the means to observe atoms. Unfortunately it was not accepted for over 2,000 years.
He claimed that the idea of atoms existing was false. He stated that everything was made of the four elements- Fire, water, earth, and air. This was widely accepted for over 2,000 years.
1896 First Modern Olympic Games
The Olympic Games of the I Olympiad are held in Athens, Greece.
The original Olympics date back to 776 BC and were held at Olympia on the border of Greece and Macedonia and only Greeks were allowed to compete.
Born in August 12, 1887 in Vienna, Austria
Took up Botany, which resulted in series of papers in plant phylogeny
Son of well educated parents
Schrodinger's wide interests dated from his school years at the Gymnasium, where he not only had a liking for the scientific disciplines, but also appreciated the severe logic of ancient grammar and German poetry. He abhorred memorizing of data and learning from books
It was in these years that Schrodinger acquired a mastery of eigenvalue problems in the physics of continuous media, thus laying the foundation for his future great work.
From 1906 to 1910 Schrodinger was a student at the University of Vienna, during which time he came under the strong influence of Fritz Hasenöhrl, who was Boltzmann's successor.
I am Freidrich Hasenohrl
Schrodinger's cat is a thought experiment, sometimes described as a paradox, devised by Austrian physicist Erwin Schrödinger in 1935. It illustrates what he saw as the problem of the Copenhagen interpretation of quantum mechanics applied to everyday objects, resulting in a contradiction with common sense. The scenario presents a cat that may be both alive and dead, depending on an earlier random event. The thought experiment is often featured in theoretical discussions of the interpretations of quantum mechanics.
Schrodinger's cat: a cat, a flask of poison, and a radioactive source are placed in a sealed box. If an internal monitor detects radioactivity, the flask is shattered, releasing the poison that kills the cat. The Copenhagen interpretation of quantum mechanics implies that after a while, the cat is simultaneously alive and dead. Yet, when one looks in the box, one sees the cat either alive or dead, not both alive and dead. This poses the question of when exactly quantum superposition ends and reality collapses into one possibility or the other.
Hi Mr sun
my kitty ?!?
Bye little Earth
you cant vote
After his retirement he returned to an honoured position in Vienna. He died on the 4th of January, 1961, after a long illness, survived by his faithful companion, Annemarie Bertel, whom he married in 1920.
my tears are crying tears
super sayin mode
Democritus was an ancient Greek philosopher who lived from 460 BC to 370 BC. He was a pupil of Leucippus, who formulated what is thought to be the first atomic theory. It is hard to separate his theories from those of Leucippus, since they are always mentioned in the same texts, but their theories have very different basis. Democritus claimed that everything is made up of atoms. These atoms are physically, but not geometrically, indivisible; between atoms lies empty space; atoms are indestructible; have always been, and always will be, in motion.
Newton suggested that atoms are held together with forces (ie. attraction). He also stated that "matter is formed of solid, massy impenetrable particles”.
Aristotle was a Greek philosopher who believed that all things were made of earth, fire, water, and air. He disputed the claims of Democritus, and most agreed that Aristotle's idea made more sense, so they continued to believe this for over 2,000 years.
you fool im Freidrich Hasenohrl!!!!
Determined that "The atomic number of an element is equal to the number of protons in the nucleus". This was used to reorganize the Periodic Table based upon atomic numbers instead of atomic mass.
Developed the image of atomic structure by observing that electrons were built in successive orbital shells inhabited by electrons.
Viewed electrons as continuous clouds and introduced "wave mechanics". He believed that electrons were waves rather than actual particles, and that the specific location of each electron cannot be determined.
Discovered that there is a neutral particle within the nucleus of an atom with a mass close to that of the proton- The neutron.
After the gold foil experiment, (firing alpha particles at a thin sheet of gold) he found that the nucleus of an atom was very dense, very small, and positively charged. He also assured that electrons were outside of the nucleus.
This is a partial differential equation that describes how the quantum state of a physical system changes over time. There is a time-dependent and time-independent method of solving these equations (The equation is, of course, mathematical, as with classical physics, including Newton's laws). There are many factors in these equations, including total, kinetic, and potential energy, and it follows the Law of Conservation of Energy. In classical physics, every particle has a specific location at all times, even when in motion. This equation states otherwise- It states that while in motion, something's- Like and electron- position cannot be specifically measured, but the measurements made are drawn from a probability distribution, or a guess. The Heisenburg Uncertainty Principle states that the more you know about a particle's Location, the less you know about its velocity. The Schrödinger equation describes the (deterministic) evolution of the wave function of a particle.
1911- Rutherford's Atomic Nucleus Schrodinger's Wave Equation
Quantum Mechanical Model of the Atom
Discovered that inert gases (the Noble Gases) has a stable electron configuration, which is why they had such chemical inactivity.
Pew! Pew! Pew!
What did he have to do with Chemistry???
Since this dude was a physicist...
“Based on mathematics, and usually used for understanding and observing complex atoms.”
Murray Gell-Mann and George Zweig
Brought forth the idea of "quarks", which are the smallest known particles, which, when used like building blocks, serve to explain some complex chemical structures.
"The model can be portrayed as a nucleus surrounded by an electron cloud."
"The cloud is most dense, the probability of finding the electron is greatest, and conversely, the electron is less likely to be in a less dense area of the cloud."
"Does not define the exact position of electron but predicts the odds of the location of the atom."
Quantum Mechanic Model of Atom
Schrodinger helped with the development of this model
In 1926, Schrodinger developed the Atomic theory which is a combination of the Broglie equation and the behaviour of waves.
consists of mathematical equations known as wave functions
the disadvantage is that it is difficult to imagine a physical model of electrons as waves