In music, the schisma (also spelled skhisma) is the interval between a Pythagorean comma (531441:524288) and a syntonic comma (81:80) and equals 5(38)⁄215 or 32805:32768 = 1.00113, which is 1.9537 cents. It may also be defined as: * the difference between 8 justly tuned perfect fifths plus a justly tuned major third and 5 octaves; * the difference between major limma and Pythagorean limma; * the difference between the syntonic comma and the diaschisma. Schisma is a Greek word meaning a split (see schism) whose musical sense was introduced by Boethius at the beginning of the 6th century in the 3rd book of his 'De institutione musica'. Boethius was also the first to define diaschisma. Andreas Werckmeister defined the grad as the twelfth root of the Pythagorean comma, or equivalently the difference between the justly tuned fifth (3/2) and the equally tempered fifth of 700 cents (27/12). This value, 1.955 cents, may be approximated by the ratio 886:885. This interval is also sometimes called a schisma. Curiously, appears very close to 4:3, the just perfect fourth. This is because the difference between a grad and a schisma is so small. So, a rational intonation version of equal temperament may be realized by flattening the fifth by a schisma rather than a grad, a fact first noted by Johann Kirnberger, a pupil of Bach. Twelve of these Kirnberger fifths of 16384:10935 exceed seven octaves, and therefore fail to close, by the tiny interval of , the atom of Kirnberger of 0.01536 cents. Tempering out the schisma leads to schismatic temperament. As used by Descartes, a schisma added to a perfect fourth = 27:20 (519.55 cents), a schisma subtracted from a perfect fifth = 40:27 (680.45 cents), and a major sixth plus a schisma = 27:16 (= 81:48 = 905.87 cents). By this definition is a "schisma" is what is known as the syntonic comma (81:80). (Wikipedia).
Unpacking the Schrödinger Equation
We've talked about the Schrödinger equation before, but we really didn't dig into it with any depth at all. Now it's time to really get in there and do the math. What is the Hamiltonian operator? What is the time-independent Schrödinger equation? What we can we do with this equation? Let's
From playlist Modern Physics
Professor Christopher Janaway discusses some of the ideas of Arthur Schopenhauer. This comes from an episode on Schopenhauer and Wagner. More Short Clips: https://www.youtube.com/playlist?list=PLhP9EhPApKE8v8UVlc7JuuNHwvhkaOvzc #Philosophy #Schopenhauer
From playlist Shorter Clips & Videos - Philosophy Overdose
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From playlist Zoology
The Philosophy of Schopenhauer
In this lecture, Professor Chris Janaway (University of Southampton) introduces the philosophy of Schopenhauer – the fact that “life … is really constant suffering, or at any rate … a business that does not cover the cost.” This lecture is part of a larger course on the philosophy of Arth
From playlist Philosophy
Dealing with Schrodinger's Equation - The Hamiltonian
https://www.patreon.com/edmundsj If you want to see more of these videos, or would like to say thanks for this one, the best way you can do that is by becoming a patron - see the link above :). And a huge thank you to all my existing patrons - you make these videos possible. Schrodinger's
From playlist Quantum Mechanics
Separation of variables and the Schrodinger equation
A brief explanation of separation of variables, application to the time-dependent Schrodinger equation, and the solution to the time part. (This lecture is part of a series for a course based on Griffiths' Introduction to Quantum Mechanics. The Full playlist is at http://www.youtube.com/
From playlist Mathematical Physics II - Youtube
Gadamer on Schopenhauer (1991)
A very short clip of Gadamer discussing Schopenhauer. More details will be added at a later date. More Short Clips: https://www.youtube.com/playlist?list=PLhP9EhPApKE8v8UVlc7JuuNHwvhkaOvzc More Gadamer: https://www.youtube.com/playlist?list=PLhP9EhPApKE_MbPzGOh27qfdqiCaf7Uot #Philosophy
From playlist Gadamer
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Indian Philosophy by Dr. Satya Sundar Sethy, Department of Humanities and Social Sciences, IIT Madras. For more details on NPTEL visit http://nptel.iitm.ac.in
From playlist IIT Madras: Introduction to Indian Philosophy | CosmoLearning.org Philosophy
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Now that we understand the general characteristics of phylum Rotifera, let's dig into some of the clades within this phylum. These would be Bdelloidea, Seisonidea, Monogononta, Acanthocephala. Their relationships and phylogeny are still not firmly known, but let's talk about what we do kno
From playlist Zoology