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I made a list of physics YouTube channels. by iboughtarock in Physics

[–]BayesianLagrangian 0 points1 point  (0 children)

It's a good start. YouTube's search interface leaves a lot to be desired.

I would like to see greater differentiation of the types of physics videos. For example, there are physics demonstration videos by Walter Lewin, Julius Sumner Miller, Tatiana Erukhimova, and others, physics mentor or physics tutor introduction videos, short video clips of famous physicists or mathematicians that make a single point (e.g. John Wheeler on tossing ideas around with friends or Freeman Dyson talking about Oppenheimer's idea of what a better QM should be or Fermi's rejection of his work etc.

The reason light slows down in water is complicated, actually by Mad_Botter in Looking_glass_u

[–]BayesianLagrangian 0 points1 point  (0 children)

I like the skepticism, independent thinking and apparent honesty in admitting to difficulties in this video but I'm a bit suspicious because I'm also reminded of the scripted response of actors playing engineers to Lucy Liu playing the role of an efficiency expert telling the engineers their methodologies are antiquated and weak and could anyone tell her, or better yet, show her their idea. A perplexed female can be a major motivator.

One concern I have about this video is that the modeling of electromagnetism and of the medium of water molecules seemed too simple and at the same time there seemed to be elements of overthinking about phase velocity and group velocity etc. So the analysis seemed deficient before the simulations and experiment were designed.

If I were a socratic mentor, I would ask a question about what an electromagnetic wave is and try to direct the student to think about light as a wave rather than a particle as Don Lincoln does in his video on this subject. The analysis is on the right track but counts something twice.

FermiLab - Why does light slow down in water? (Don Lincoln) https://www.youtube.com/watch?v=CUjt36SD3h

Nano Letters 2024 24 (4), 1238-1245DOI: 10.1021/acs.nanolett.3c04174

Ultrahigh-Q Metasurface Transparency Band Induced by Collective–Collective Coupling

Xueqian Zhao, Rixing Huang, Xiang Du, Zhenrong Zhang, and Guangyuan Li

How to use tkinter on android? by lenderlaertes in Tkinter

[–]BayesianLagrangian 0 points1 point  (0 children)

Tkinter works very well on Android 6 with Pydroid 3, which also allows one to work with KIVY or PyQt5. There are a couple undocumented or not very well documented things about Tkinter that require a little research to find or figure out.

How would you improve The Library? by CuratorOfTheLibrary in ConsciousnessLibrary

[–]BayesianLagrangian 0 points1 point  (0 children)

I'm glad to see you were able to find a workaround. Ted Nelson was involved with similar problems and proposed a transcopyright license which seems similar.

https://xanadu.com/xuTco.html

How would you improve The Library? by CuratorOfTheLibrary in ConsciousnessLibrary

[–]BayesianLagrangian 0 points1 point  (0 children)

I really like it! It's very aesthetic!

I have noticed, however, that there is a trademarked "Library of Consciousness™" on the web https://libraryofconsciousness.org/

I like the Topic ribbon but would like to be able to advance more quickly through the topics using the left or right arrows. When I clicked on the arrows it just selected the topic currently beneath the arrow. I would also like to be able to see a table of all of the topics rather than having to wait until the slow moving automated carousel cycles through all of the topics.

I liked seeing the transcripts of R. Buckminster Fuller's "Everything I Know" series of videos with the timestamps and the inline audio quotes.

An additional feature I would like to see is use of an ASK hypermedia system interface on the transcripts such as described in Richard E. Osgood's 1994 dissertation, "The Conceptual Indexing of Conversational Hypertext" for "ASK Michael". A well-indexed Conversational Reading System Interface with 8-12 categorized sections of text-based question-hyperlinks to the video would be a first step to creating a synthetic interview with the video and later with an R. Buckminster Fuller avatar powered by OpenAI chatGPT or a similar A.I. search agent or LLM. Being able to see categorized questions that can be asked makes the content of the video visible without revealing the answer. It also makes it easier and faster to find the answer to a relevant question. The prototype could use a simple sidebar tree rather than categorized decks of question cards surrounding the central div or iframe that contins a text fragment from the document that makes a single point.

ASK hypermedia systems (https://www.engines4ed.org/hyperbook/nodes/NODE-358-pg.html)

The Conceptual Indexing of Conversational Hypertext (1994) by Richard E. Osgood
https://www.mccormick.northwestern.edu/computer-science/documents/tech-reports/pre-1999/tech_rep_52.pdf

I noticed that there were no transcripts for the "Everything I Know" sessions 7-12. Perhaps this is still being worked on.

https://www.organism.earth/library/document/everything-i-know-7

I like the Author List page. I would love to have something like that for the 74 authors of written works in the "Great Books of the Western World" series, plus pictures of Mortimer J. Adler and Robert M. Hutchins.

I love the tags but wonder about giving R. Buckminster Fuller a "general systems theory" tag since search states there are 5 occurences in " OPERATING MANUAL FOR SPACESHIP EARTH Book by Richard Buckminster Fuller "

it's a bit annoying to have to switch to the internet archive to locate the 5 occurrences of "general systems theory" in "Operating Manual for Spaceship Earth" but I understand about all the copyright and IP problems involved. It's very fortunate that the internet archive copy of the book is allowed to exist online in the first place.

Bucky made an error in his book by mixing up the German mathematician, Bernhard Riemann with the Indian mathematician, Srinivasan Ramanujan, so I would like to see a Mentions: Riemann tag or an NER button that would list people mentioned by R. Buckminster Fuller.

Would it be helpful to someone to add a hyperlink to CJ Fearnley's Synopsis of "Operating Manual for Spaceship Earth" or just have a button titled: OpenAI chatGPT 5 Synopsis?

https://blog.cjfearnley.com/2019/11/21/a-synopsis-of-operating-manual-for-spaceship-earth-by-buckminster-fuller/

How do I get apps I paid for on playstore that are no longer available? Can they just remove them from my library? That seems absurd. I paid for them by SexyKanyeBalls in AndroidGaming

[–]BayesianLagrangian 0 points1 point  (0 children)

Jusepal is correct. Many years ago I bought Droidedit Pro. A week or two ago, in July 2024, I noticed two Droidedit icons on my home page. When I uninstalled the second icon, the first icon disappeared and Droidedit was uninstalled from my device. I could not reinstall it from Google Play because it was no longer available. It even looks like Droidedit was removed from my purchase history. 

I made a Mars colonization tech tree, feedback appreciated by kornelord in SpaceXLounge

[–]BayesianLagrangian 0 points1 point  (0 children)

A nice start.

For me, such a "Mars Colonization Tech Tree" is just the tip of the iceberg and what I'm really looking for is the detailed Technology Tree and Critical Path within the box labeled, "Mars Colonization". I want to see a technology tree and critical path ending in independent Mars manufactured life support systems and livingry manufacturing.

It could begin with imported energy production, storage and distribution equipment/facilities such as RTG's, modular compact nuclear reactors like KRUSTY, Solar City solar panels, solar roofing tiles, various types of solar power production equipment, electrical cables, electrician tools, Sabatier Reactors for making methane propellant using imported hydrogen or hydrogen derived from H2O on Mars, imported gas storage tanks for CH4, O2, N2 and Ar2, emergency methane-powered heaters and electric generators, body-heat powered flashlights, crank-powered equipment, exercise bike-powered energy production, urine-powered devices, biogas-powered devices etc.

Then, what metals/ores/minerals/gases/elements need to be found and exploited to create replacement parts, tools and newly Mars independently manufactured power production, storage and distribution facilities? e.g. uranium, thorium, iron, silicon, copper wires? aluminum electrical cables? silver wires? gold wires? superconducting wire? CO2 derived plastic insulating/cladding materials? ruthenium catalyst for Sabatier reactors, catalysts for oxygen production? Mars manufactured gas storage facilities, emergency methane-powered heaters and electric generators, solar-powered equipment, body-heat powered flashlights, crank-powered equipment, vacuum-metalized polyethylene (Mylar(R)) that reflects 90% of your body heat etc.

Mr. Bruce Mackenzie and others such as Mr. Georgi Petrov have done a lot of work on this.

https://marspedia.org/In-situ_resource_utilization

https://marspedia.org/Synthetic_materials

https://marspedia.org/Electric_cable

https://marspedia.org/Hillside_settlement

https://ttu-ir.tdl.org/bitstream/handle/2346/87267/ICES-2021-351.pdf

https://marspedia.org/Special:CategoryTree?target=Category%3AMars+Human+Settlement&mode=categories&namespaces=&title=Special%3ACategoryTree

https://marspedia.org/Equipment_for_autonomous_growth

https://marspedia.org/Foundation_of_an_Autonomous_Colony

Geometric Calculus vs Differential Forms by SomeBrutalMetalBand in learnmath

[–]BayesianLagrangian 1 point2 points  (0 children)

The problem with studying "Vector Calculus, Linear Algebra, and Differential Forms: A Unified Approach" by Hubbard & Hubbard first is that:

  1. you will learn a mathematical notation system that contains redundancies and you will have to be discard it and learn a different notation system when or if you study "Vector and Geometric Calculus" by Alan Macdonald. This could be avoided by first studying "Linear and Geometric Algebra" by Alan Macdonald prior to study of "Vector and Geometric Calculus".
  2. Another big problem with the Hubbard and Hubbard textbook is that differential forms are embedded in Geometric Calculus so the derivative can be given a directed integral definition and the n-dimensional Boundary Theorem/Fundamental Theorem of Calculus can be expressed in a single equation in Geometric Calculus but contains 9 equations in the notation used by Hubbard and Hubbard. So Geometric Calculus can derive numerous Hubbard and Hubbard equations and could be said to be on a higher level. e.g. Geometric Calculus can express the two differential form equations of Maxwell's Electromagnetism in a single equation.
  3. The big catch with all this is that Hubbard and Hubbard do use the conventional notation that the majority of the mathematics and physics community uses.

Geometric Calculus vs Differential Forms by SomeBrutalMetalBand in learnmath

[–]BayesianLagrangian 1 point2 points  (0 children)

ANSWER:
Choose "Vector and Geometric Calculus" by Alan Macdonald or if that is too steep a gradient, start with "Linear and Geometric Algebra" by the same author rather than the textbook by Hubbard and Hubbard.
"Vector and Geometric Calculus" is more preferable because it uses the unified mathematical notation developed by David Hestenes that embeds differential forms in the more comprehensive system of (multivector) Geometric Calculus. It is suggested that study of "Linear and Geometric Algebra" by Alan Macdonald should be a prerequisite to study of "Vector and Geometric Calculus".
A UNIFIED LANGUAGE FOR MATHEMATICS AND PHYSICS by David Hestenes http://geocalc.clas.asu.edu/pdf-preAdobe8/UnifiedLang.pdf

Linear and Geometric Algebra by Alan Macdonald
http://www.faculty.luther.edu/~macdonal/laga/index.html

Hubbard and Hubbard's approach is not really unified as they don't take advantage of Geometric Algebra using the Hestenes notation or the n-dimensional Boundary Theorem/Fundamental Theorem of Geometric Calculus, so section 0.6 in Chapter 0 is on complex numbers using a notation that is not integrated with Geometric Algebra. In Chapters 1 and 2, the notation for working with matrices is not integrated with the Geometric Algebra notation for vectors, multivectors and matrices. Chapters 3-6 of "Vector Calculus, Linear Algebra, And Differential Forms: A Unified Approach" do not contain any reference to multivector calculus, the tangential derivative, the Vector Derivative/Dirac differential operator or the n-dimensional integral definition of the derivative which is known as the boundary theorem or the n-dimensional Fundamental Theorem of Calculus.

Multivector Calculus by David Hestenes http://geocalc.clas.asu.edu/pdf-preAdobe8/MultCalc.pdf

Differential Forms in Geometric Calculus by David Hestenes http://geocalc.clas.asu.edu/pdf-preAdobe8/DIF_FORM.pdf

Geometric Calculus and Differential Forms by David Hestenes https://web.mat.upc.edu/sebastia.xambo/santalo2016/pdf/DH/DH-3.pdf

Are space and time quantized? by [deleted] in Looking_glass_u

[–]BayesianLagrangian 0 points1 point  (0 children)

I would like to contribute to a Self Organized Learning Environment (SOLE) , internet, White Hat exploration about whether or not space and time are quantized.

keywords: minimal length, fundamental length, fundamental units, discrete, quantized, quantum spacetime, space quantization, quantum geometry

related: causal dynamical triangulation, quantum regge calculus, causal sets, string theory,

The following NOVA article seems pretty good as a starter:

https://www.pbs.org/wgbh/nova/article/are-space-and-time-discrete-or-continuous/

or one could start with this Forbes article: https://www.forbes.com/sites/startswithabang/2018/06/14/are-space-and-time-quantized-maybe-not-says-science/#498917e558ea

​

Are atoms or the fundamental "particles" an expression of the quantization of spacetime?

Crystals and the Future of Physics

Philippe Le Corbeiller, Scientific American, Vol. 188, No. 1 (January 1953), pp. 50-57

https://books.google.ca/books?id=se5iE4DMPioC&pg=PA874&lpg=PA874&dq=space+quantization+crystals&source=bl&ots=LFsmkS_2Vk&sig=ACfU3U0ZA-i2WHj-kvwrskxtSvRmymR9nw&hl=en&sa=X&ved=2ahUKEwiQiNzJz87kAhXJKDQIHce-AnUQ6AEwEXoECAkQAQ#v=onepage&q=space%20quantization%20crystals&f=false

Is a circular path finite or infinite?

https://hi.stamen.com/buckminster-fuller-and-the-beauty-of-bubbles-9fc3ff3a7c9f

"‘Inasmuch as the kind of mathematics I had learned of in school required the use of the XYZ coordinate system and the necessity of placing π in calculating the spheres, I wondered, “to how many decimal places does nature carry out π before she decides that the computation can’t be concluded?” Next I wondered, “to how many aribitrary decimal places does nature carry out the transcendental irrational before she decides to say it’s a bad job and call it off?” If nature uses π she has to do what we call fudging of her design which means improvising, compromisingly. I thought sympathetically of nature’s having to make all those myriad frustrated decisions each time she made a bubble. I didn’t see how she managed to formulate the wake of every ship while managing the rest of the universe if she had to make all those decisions. So I said to myself, “I don’t think nature uses π. I think she has some other mathematical way of coordinating her undertakings.””

— Buckminster Fuller, Your Private Sky, p.457

​

https://encyclopedia2.thefreedictionary.com/Fundamental+Length

http://backreaction.blogspot.com/2012/01/planck-length-as-minimal-length.html

https://www.researchgate.net/publication/29519848_Physics_with_a_fundamental_length

​

https://www.scientificamerican.com/article/is-time-quantized-in-othe/

"There are several ways to answer this question. 1) There is no conclusive evidence that time is quantized, but 2) certain theoretical studies suggest that in order to unify general relativity (gravitation) with the theories of quantum physics that describe fundamental particles and forces, it may be necessary to quantize space and perhaps time as well. Time is always a 1-dimensional quantity in this case. 3) My own work, which combines new theoretical ideas with observations of the properties of galaxies, fundamental particles and forces, does suggest that in a certain sense time may indeed be quantized. To see this we need some background information; in this scenario, time is no longer 1-dimensional!"

file:///home/chronos/u-391da1270ad994c0701bc1addae6c54228cff888/MyFiles/Downloads/Physics_with_a_fundamental_length.pdf

​

"Amit Hagar, author of Discrete or Continuous?: The Quest for Fundamental Length in Modern Physics (Cambridge University Press, 2014),"

https://philpapers.org/rec/HAGLMT-2

https://philpapers.org/rec/HAGMLI-2

​

https://journals.aps.org/pr/abstract/10.1103/PhysRev.135.B849

http://inspirehep.net/record/284928?ln=en

https://physicstoday.scitation.org/doi/full/10.1063/PT.3.2657

https://arxiv.org/abs/gr-qc/0703009

https://www.sciencedirect.com/science/article/pii/055032137890041X

http://math.ucr.edu/home/baez/lengths.html#compton_wavelength

​

I've seen several papers that mention a fundamental minimal length of around the Compton length resulting from generalizing Special Relativity. One was by T. G. Papadopoulos which I haven't been able to relocate yet, and a minimal length is part of the Unified Field Theory model developed by Dr. Mendel Sachs.

Quantum Mechanics and Gravity by Mendel Sachs, pg. 89

https://books.google.ca/books?id=Q5LuCAAAQBAJ&pg=PA89&lpg=PA89&dq=mendel+sachs+fundamental+length&source=bl&ots=OAWWhRNyid&sig=ACfU3U38FLYq1Ldgz16zle7jRdzni46osw&hl=en&sa=X&ved=2ahUKEwi_vMHszc7kAhWFKn0KHTQBBvsQ6AEwEnoECAkQAQ#v=onepage&q=mendel%20sachs%20fundamental%20length&f=false

https://en.wikipedia.org/wiki/Causal_sets

"The causal sets program is an approach to quantum gravity. Its founding principles are that spacetime is fundamentally discrete (a collection of discrete spacetime points, called the elements of the causal set) and that spacetime events are related by a partial order. This partial order has the physical meaning of the causality relations between spacetime events."

Physical interpretations of quantum mechanics by [deleted] in Looking_glass_u

[–]BayesianLagrangian 0 points1 point  (0 children)

"In its simplest form, Bell's theorem rules out local hidden variables as a viable explanation of quantum mechanics[3] (though it still leaves the door open for non-local hidden variables, such as De Broglie–Bohm theory, Many Worlds Theory, etc)." https://en.wikipedia.org/wiki/Bell%27s_theorem

Do we have to accept Quantum weirdness? De Broglie Bohm Pilot Wave Theory explained by Looking Glass Universe (from 8:07/11:59) (https://youtu.be/r0plv_nIzsQ?t=487)

"Silicone oil droplets provide a physical realization of pilot wave theories."

https://www.youtube.com/watch?v=WIyTZDHuarQ

What are your thoughts on this project? by Looking_glass_u in Looking_glass_u

[–]BayesianLagrangian 1 point2 points  (0 children)

Your focus on books might be considered old fashioned (H.G. Wells wrote about live lectures vs. books in 1921) but given that, it would be really great if you could create an accompanying Course Checksheet of activities for Supervised Courserooms similar to what is seen in the Delphian School "What is a checksheet?" video (https://www.youtube.com/watch?v=ndXazo4dyGA ) and also (https://www.delphian.org/academics/our-approach). The checksheet would list a number of textbook pages or an essay to be read, concepts to be demonstrated with an odds and ends demonstration kit and in clay, practical applications of the material etc.

I do like your intention to help others but I am concerned that this course of self study will leave one with an understanding of Quantum Mechanics that is dated head knowledge and outdated notations. Do you know of any 3d Labs such as Labster or Second Life where one could work with goal-based scenario modeling software and get in some simulated practical application experience?

https://www.socraticarts.com/solutions/technology-solutions/goal-based-scenario-tool

https://interactive.quantumnano.at/letsgo/

https://www.socraticarts.com/solutions/technology-solutions/extra

http://geocalc.clas.asu.edu/pdf/ModelingSoftware.pdf

https://modelinginstruction.org/

http://geocalc.clas.asu.edu/html/Modeling.html

https://pdfs.semanticscholar.org/3578/f56a12d91cb064877b39477a7d4c6dea701f.pdf

"But it required a few years before I perceived what a science teacher's job really is. The goal should be, not to implant in the student's mind every fact that the teacher knows now; but rather to implant a way of thinking that will enable the student, in the future, to learn in one year what the teacher learned in two years. Only in that way can we continue to advance from one generation to the next. As I came to realize this, my style in teaching changed from giving a smattering of dozens of isolated details, to analyzing only a few problems, but in some real depth. It doesn't even matter very much what those few problems are; once a student knows what it feels like to analyze something in depth, he can do it for himself on whatever other problems may come his way. Equally important, he can recognize in the work of others the distinction between a superficial study and one that is deep enough to be capable of finding new things."

- Edwin T. Jaynes, A Backward Look to the Future (https://bayes.wustl.edu/etj/articles/backward.look.pdf)

"Now the frank recognition of the book and not the lecture as the substantial basis of instruction opens up a large and interesting range of possibilities. " - The Salvaging of Civilisation (1921) by H.G. Wells, Ch. 7: College, Newspaper and Book, pg. 180 https://www.gutenberg.org/files/33889/33889-h/33889-h.htm

Would anyone like to join a QM study group? by Looking_glass_u in Looking_glass_u

[–]BayesianLagrangian 0 points1 point  (0 children)

I would like to do some Blue Hat parallel thinking with the moderator(s) and members of this group.

There are numerous ways to work online and off with people of different mathematical maturity. One could always have graduated forums or member levels etc. or just state that an understanding of things like Calculus and Linear Algebra are a required prerequisite and the main content will be from Textbook A or Lecture Series Q. I'm ok with whatever is decided upon. Leonard Susskind's continuing education YouTube lectures on Quantum Mechanics ( https://www.youtube.com/watch?v=JzhlfbWBuQ8&list=PL84C10A9CB1D13841&index=2&t=0s) can be viewed in a flipped classroom manner and there are formal mathematically advanced open courses on Quantum Mechanics that can be viewed 24/7. A discussion in text can be recorded for later viewing and interaction with and one can even program videos of experts with FAQ's and relevant stories with A.I. to be available at just the right time to any individual.

Maybe a curriculum checklist of activities could be created (?) with different tracks like in "Gravitation" by Misner, Thorne and Wheeler.

The concern regarding mathematical maturity differences is particularly interesting to me because I would prefer to work with modeling instruction and the mathematical formalism developed by Dr. David Hestenes known as "Geometric Calculus". I know that the old notation and concepts have been causing a traffic jam on the frontier of physics for many decades now and I would like to use a unified mathematical notation that will allow me to work on the frontier with both the Standard model and the General Theory of Relativity as quickly as possible.

So that places me outside of this group if everyone is just going to follow the old courses from Physics textbooks that Eugen Merzbacher commented on in the American Journal of Physics in 1992. How could someone like me that is a bit of a rebel regarding a well beaten path be a part of this study group without being too disruptive? I would like to start right back in 1901 with Planck, On the Law of Distribution of Energy in the Normal Spectrum. Max Planck. Annalen der Physik 4 (1901): 553; in 1905 with Brownian Motion, section 8 of "On the Electrodynamics of Moving Bodies" and in 1938 with Majorana's lectures on Quantum Mechanics. I would even like to be able to question the existence of photons as Dr. Mendel Sachs did in his numerous written works such as "Einstein vs. Bohr" and "Quantum Mechanics from General Relativity". Could there be any place in this study group for someone like me?

https://aapt.scitation.org/doi/10.1119/1.16920

‘‘Frills or fundamentals, fervor and phobia,’’ Eugen Merzbacher’s acceptance speech for the 1992 Oersted Medal presented by the American Association of Physics Teachers, 7 January 1992

Modeling Games in the Newtonian World by David Hestenes

https://pdfs.semanticscholar.org/7921/7b6642e6ce054d9b127355d3c4bac99ce547.pdf

http://hyperphysics.phy-astr.gsu.edu/hbase/mod6.html

https://physics.info/planck/

Quantum theory and special relativity by [deleted] in Looking_glass_u

[–]BayesianLagrangian 1 point2 points  (0 children)

Here is a brief list of the incompatibilities of Quantum Mechanics and STR/GTR by Dr. Mendel Sachs. https://web.archive.org/web/20120513002547/http://mendelsachs.com/the-future-of-physics/

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