The history of the lithium-ion (Li-ion) battery is marked by significant advancements in materials science and engineering, influenced by the energy demands of portable electronics and electric vehicles. Here’s a brief timeline of key developments: ### 1970s: - **Discovery of Lithium as a Battery Material:** Researchers began exploring lithium as a potential anode material due to its high electrochemical potential and energy density.
Technique to make cool sound instruments mathematically, either with electronic hardware components, or with a software synthesizer.
Good tutorials:
Best known techniques:
The International Electrical Congress is a global gathering of professionals, researchers, and experts in the field of electrical engineering and related disciplines. These congresses often provide a platform for attendees to share knowledge, present research findings, discuss innovations, and explore the latest trends in electrical technology. Typically, the event may include keynote speeches, technical sessions, workshops, and networking opportunities designed to foster collaboration among participants from various countries and sectors of the electrical engineering industry.
Uranium, rhodium, and germanium are three distinct chemical elements, each with different properties and applications. 1. **Uranium (U)**: A heavy, silvery-white metallic element that is radioactive and has the atomic number 92. Uranium is primarily used as fuel in nuclear reactors and is a key material in the production of nuclear weapons. It occurs naturally in the Earth's crust and is mined in various parts of the world.
The Acoustical Society of America (ASA) is a professional organization dedicated to advancing the knowledge and practice of acoustics, which is the science of sound and its production, transmission, and effects. Founded in 1929, the ASA aims to promote research and education in acoustics, support professionals in the field, and provide a platform for communication among scientists, engineers, and practitioners.
Uranium ruthenium silicide (often referred to as URuSi) is a compound that consists of uranium (U), ruthenium (Ru), and silicon (Si). It is of interest in the field of materials science and condensed matter physics due to its unique properties, which can include interesting electrical and magnetic behaviors.
The best modern sung Western music of all time by 
Ciro Santilli 37 Updated 2025-07-16 +Created 1970-01-01
Ciro Santilli 37 Updated 2025-07-16 +Created 1970-01-01You have to know the language to appreciate them.
The 60's and 70's were the days, those great proxy wars and CIA dictatorships allowed hippies to make awesome freedom music without too imminent a fear of death.
Songs making fun of things or that are pure Brazil nostalgia are also accepted. No love songs, ever. Except some by Caetano, but that's it!
English:
- 1967 Red Telephone track from the Forever Changes (1967) album by Love
- 1967 White Rabbit track from the Surrealistic Pillow (1967) album by Jefferson Airplane
French:
- Emmenez-moi (wiki) from the album Entre Deux Rêves (1967) by Charles Aznavour
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