Was the first model to explain the Balmer series, notably linking atomic spectra to the Planck constant and therefore to other initial quantum mechanical observations.
This was one of the first major models that just said:
I give up, I can't tie this to classical physics in any way, let's just roll with it, OK?
It still treats electrons as little points spinning around the nucleus, but it makes the non-classical postulate that only certain angular momentums (and therefore energies) are allowed.
Bibliography:
- Inward Bound by Abraham Pais (1988) Chapter 9.e Atomic structure and spectral lines - Niels Bohr
- The Quantum Story by Jim Baggott (2011) Chapter 3 A Little Bit of Reality
Refinement of the Bohr model that starts to take quantum angular momentum into account in order to explain missing lines that would have been otherwise observed TODO specific example of such line.
They are not observe because they would violate the conservation of angular momentum.
Introduces the azimuthal quantum number and magnetic quantum number.
Applications:
- because it has an even number of nucleons it is transparent to NMR, and therefore is useful in solvents for NMR spectroscopy
Cody'sLab had a nice 5 video series on making it at home! But the United States Government asked him to take it down as suggested at Video "What's Been Going On With Cody'sLab? by Cody'sLab (2019)" at youtu.be/x1mv0vwb08Y?t=84.
Nihonium is a synthetic chemical element with the symbol Nh and atomic number 113. It is one of the superheavy elements in the periodic table and was first officially reported in 2004 by a team of Japanese scientists at the RIKEN institute. The name "Nihonium" is derived from "Nihon," which is one of the ways to say "Japan" in Japanese, reflecting the element's discovery in Japan.
Taqi ad-Din Muhammad ibn Ma'ruf, often referred to simply as Taqi ad-Din, was a prominent Arab astronomer, mathematician, and engineer during the 16th century. He was born in 1526 in Damascus in the Ottoman Empire (modern-day Syria). He is best known for his contributions to astronomy and for establishing the first observatory in the Islamic world, the Maragha Observatory, which played a pivotal role in the development of astronomical research.
The Pearson distribution, or Pearson system of distributions, is a family of continuous probability distributions that are defined based on moments, especially how the shape of the distribution is determined by its moments (mean, variance, skewness, and kurtosis). This system was introduced by Karl Pearson in the early 20th century, and it encompasses a wide range of probability distributions, including the normal distribution, beta distribution, and skewed distributions.
Data-Link Switching (DLSw) is a networking protocol that helps in the interconnection of different types of network protocols, specifically to facilitate the transmission of data over WAN (Wide Area Network) links. It was primarily developed to enable the encapsulation and transport of legacy protocols, such as IBM's SNA (Systems Network Architecture), over TCP/IP networks.
Edward H. Sussenguth was a renowned American marine biologist, particularly recognized for his work in the field of ichthyology, the study of fish. He significantly contributed to our understanding of fish taxonomy and ecology, particularly in the Atlantic Ocean. Sussenguth's research included extensive studies on the life histories and populational dynamics of various fish species. His work is important for both academic research and practical applications in fisheries management and conservation.
Pinned article: 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 3. Visual Studio Code extension installation.
Figure 4. Visual Studio Code extension tree navigation.
Figure 5. Web editor. 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.Video 4. OurBigBook Visual Studio Code extension editing and navigation demo. Source. 
- 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