The Grand Unification Epoch is a theoretical period in the early universe, occurring approximately between \(10^{-36}\) and \(10^{-32}\) seconds after the Big Bang. During this brief moment, it is believed that the four fundamental forces of nature—gravity, electromagnetism, the weak nuclear force, and the strong nuclear force—were unified into a single force.
Georges Lemaître (1894–1966) was a Belgian priest, astronomer, and professor of physics who is best known for proposing what is now known as the Big Bang theory of the origin of the universe. He was one of the first to suggest that the universe is expanding, a concept that was revolutionary at the time.
Centralized system that still attempts some level of privacy.
In it, a central bank issue tokens that are stored offline in your cell phone, a bit like cash bank notes.
When you take those tokens, a corresponding amount gets removed from your bank account, a bit like cash bank notes.
When a transaction is made, tokens are put into a spent token list via central API, and cannot be double spent thereafter. The corresponding ammount is then added to the bank account of the receiver. This also means that offline transactions are not possible.
Tends to be Ciro Santilli's first attempt for quick and dirty graphing: github.com/cirosantilli/gnuplot-cheat.
When it doesn't, you Google for an hours, and then you give up in frustration, and fall back to Matplotlib.
Couldn't handle exploration of large datasets though: Survey of open source interactive plotting software with a 10 million point scatter plot benchmark by Ciro Santilli
Bit manipulation refers to the act of algorithmically manipulating bits or binary digits, which are the most basic form of data in computing and digital communications. It involves operations that can be performed on binary numbers at the bit level, allowing for efficient data processing and representation.
The Cosmological Lithium Problem refers to an observed discrepancy between the predicted abundance of lithium-7 (^7Li) in the universe according to Big Bang nucleosynthesis (BBN) models and the abundances measured in old, low-metallicity stars. Big Bang nucleosynthesis, which describes the formation of light elements in the first few minutes after the Big Bang, predicts specific primordial abundances of hydrogen, helium, deuterium, and lithium.
How to teach Group students by interest, not by age by
Ciro Santilli 37 Updated 2025-07-01 +Created 1970-01-01
Rather, we should group students by subject of interest; e.g. natural sciences, social sciences, a sport, etc., just like in any working adult organization!
This way, younger students can actually actively learn from and collaborate with older students about, see notably Jacques Monod's you can learn more from older students than from faculty.
This becomes even more natural when you try to give students must have a flexible choice of what to learn.
This age distinction should be abolished at all stages of the system, not only within K-12, but also across K-12, undergraduate education and postgraduate education.
This idea is part of the ideal that the learning environment should be more like a dojo environment (AKA peer tutoring, see also dojo learning model), rather than an amorphous checkbox ticking exercise in bureaucracy so that "everyone is educated".
Perhaps, even more importantly, is that we should put much more emphasis on grouping students with other students online, where we can select similar interest amongst the entire population and not just on a per-local-neighbourhood basis.
The term "Cold Big Bang" isn't a widely recognized scientific term in cosmology; it may refer to several concepts within the study of the universe's origins. It's possible that it could be interpreted in a few ways: 1. **Standard Big Bang Model**: The Big Bang Theory posits that the universe began as a hot, dense state and has expanded and cooled over time.
The chronology of the universe refers to the timeline of events that occurred from the beginning of the universe to the present day. Here is a simplified overview of key milestones in this chronology: ### 1. The Big Bang (Approximately 13.8 billion years ago) - The universe begins with the Big Bang, a singularity that marks the origin of space, time, and all matter and energy. ### 2.
A saddle-node bifurcation is a concept from dynamical systems theory and is a type of bifurcation that occurs in a system when two steady states (or equilibrium points) collide and annihilate each other as a parameter is varied. This typically leads to significant changes in the behavior of the system.
GNU Core Utils command line utility by
Ciro Santilli 37 Updated 2025-07-01 +Created 1970-01-01
Non-POSIX only here.
The user friendly Chess UI! Exactly what you would expect from a GNOME Project package. But also packs some punch via the Universal Chess Interface, e.g. Stockfish just works.
Period-doubling bifurcation is a phenomenon observed in dynamical systems where a stable periodic orbit becomes unstable, leading to the emergence of a new periodic orbit with double the period of the original one. This process can occur in various contexts, including mathematical models in science and engineering, and is particularly relevant in the study of nonlinear dynamics and chaos theory.
Official demos: github.com/KhronosGroup/glTF-Sample-Assets These are visible at: github.khronos.org/glTF-Sample-Viewer-Release/ with a JavaScript viewer present at: github.com/KhronosGroup/glTF-Sample-Viewer TODO can you load models on the web?
Supports animations, e.g.:
gltf-viewer.donmccurdy.com/ is based on doesn't work with those examples because they have separate asset files.
f3d just worked for it.
Pinned article: ourbigbook/introduction-to-the-ourbigbook-project
Welcome to the OurBigBook Project! Our goal is to create the perfect publishing platform for STEM subjects, and get university-level students to write the best free STEM tutorials ever.
Everyone is welcome to create an account and play with the site: ourbigbook.com/go/register. We belive that students themselves can write amazing tutorials, but teachers are welcome too. You can write about anything you want, it doesn't have to be STEM or even educational. Silly test content is very welcome and you won't be penalized in any way. Just keep it legal!
Intro to OurBigBook
. Source. We have two killer features:
- topics: topics group articles by different users with the same title, e.g. here is the topic for the "Fundamental Theorem of Calculus" ourbigbook.com/go/topic/fundamental-theorem-of-calculusArticles of different users are sorted by upvote within each article page. This feature is a bit like:
- a Wikipedia where each user can have their own version of each article
- a Q&A website like Stack Overflow, where multiple people can give their views on a given topic, and the best ones are sorted by upvote. Except you don't need to wait for someone to ask first, and any topic goes, no matter how narrow or broad
This feature makes it possible for readers to find better explanations of any topic created by other writers. And it allows writers to create an explanation in a place that readers might actually find it.Figure 1. Screenshot of the "Derivative" topic page. View it live at: ourbigbook.com/go/topic/derivativeVideo 2. OurBigBook Web topics demo. Source. - local editing: you can store all your personal knowledge base content locally in a plaintext markup format that can be edited locally and published either:This way you can be sure that even if OurBigBook.com were to go down one day (which we have no plans to do as it is quite cheap to host!), your content will still be perfectly readable as a static site.
- to OurBigBook.com to get awesome multi-user features like topics and likes
- as HTML files to a static website, which you can host yourself for free on many external providers like GitHub Pages, and remain in full control
Figure 2. You can publish local OurBigBook lightweight markup files to either OurBigBook.com or as a static website.Figure 3. Visual Studio Code extension installation.Figure 5. . You can also edit articles on the Web editor without installing anything locally. Video 3. Edit locally and publish demo. Source. This shows editing OurBigBook Markup and publishing it using the Visual Studio Code extension. - Infinitely deep tables of contents:
All our software is open source and hosted at: github.com/ourbigbook/ourbigbook
Further documentation can be found at: docs.ourbigbook.com
Feel free to reach our to us for any help or suggestions: docs.ourbigbook.com/#contact