Jiun-Huei Proty Wu does not appear to be a widely recognized public figure or concept based on the information available up to October 2023. It is possible that Jiun-Huei Proty Wu could refer to a specific individual in academia, a professional field, or a local context that hasn't received widespread attention.
John Hartnett is an Australian astrophysicist known for his work in the field of cosmology, particularly within the context of creation science. He is associated with a young Earth creationist perspective, which posits that the Earth and the universe are significantly younger than mainstream science suggests. Hartnett has been involved in research related to the cosmic microwave background radiation and has published papers that challenge the conventional understanding of cosmology.
Mario Hamuy is a noted Chilean astronomer, recognized for his research in astrophysics, particularly in the study of supernovae and cosmology. He has made significant contributions to our understanding of the expansion of the universe and the role of dark energy. Hamuy is also involved in the development and use of astronomical observatories and instruments. In addition to his research work, he has been engaged in science communication and promoting astronomy education in Chile and beyond.
A list of cosmologists typically includes scientists who study the origin, evolution, structure, and eventual fate of the universe. Here are some notable cosmologists throughout history and in contemporary research: ### Historical Figures - **Edwin Hubble** - Known for Hubble's Law and his contributions to the understanding of the expanding universe. - **Albert Einstein** - Developed the theory of general relativity, which laid the groundwork for modern cosmology.
The Hewitt-Savage zero-one law is a result in probability theory that pertains to the behavior of certain random events in a specific kind of probability space. It states that if you have a sequence of independent and identically distributed (i.i.d.) random variables, any tail event (which is an event whose occurrence or non-occurrence is not affected by the finite initial segments of the sequence) has a probability of either 0 or 1.
A very cool thing about telecommunication is, besides how incredibly fast it advanced (in this sense it is no cooler than integrated circuit development), how much physics and information theory is involved in it. Applications of telecommunication implementation spill over to other fields, e.g. some proposed quantum computing approaches are remarkably related to telecommunication technology, e.g. microwaves and silicon photonics.
This understanding made Ciro Santilli wish he had opted for telecommunication engineering when he was back in school in Brazil. For some incomprehensible reason, telecommunications was the least competitive specialization in the electric engineering department at the time, behind even power electronics. This goes to show both how completely unrelated to reality university is, and how completely outdated Brazil is/was. Sad stuff.
Matías Zaldarriaga is a physicist known for his work in cosmology, especially in the fields related to the Cosmic Microwave Background (CMB) and large-scale structure in the universe. He has contributed to understanding the early universe, inflationary models, and the formation of large-scale structures.
Michał Heller is a prominent Polish philosopher, theologian, and cosmologist known for his work at the intersection of science and religion. He was born on July 22, 1936, in Poland and has made significant contributions to the philosophy of science, particularly in relation to the cosmological implications of modern physics. Heller is known for exploring the implications of modern cosmological theories on philosophical and theological questions, such as the nature of the universe and the existence of God.
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CP/M, which stands for Control Program for Microcomputers, is an early operating system created by Gary Kildall in the mid-1970s. It was one of the first operating systems to offer a consistent interface across different microcomputer manufacturers, making it easier for software developers to create applications that could run on multiple systems.
CP/M (Control Program for Microcomputers) is an operating system that was widely used in the late 1970s and early 1980s for microcomputers. Developed by Gary Kildall of Digital Research, CP/M was notable for being one of the first operating systems to become widely adopted in the personal computer market before the rise of MS-DOS and later Windows. CP/M software refers to a range of applications developed to run on the CP/M operating system.
CP/M, which stands for Control Program for Microcomputers, is an operating system that was widely used in the late 1970s and early 1980s for early microcomputers. Developed by Gary Kildall of Digital Research, CP/M served as a platform that enabled the execution of software applications on microcomputers based on Intel architecture, particularly those using the 8080 and Z80 processors.
Term symbols for carbon ground state by
Ciro Santilli 37 Updated 2025-07-11 +Created 1970-01-01
Carbon has electronic structure 1s2 2s2 2p2.
For term symbols we only care about unfilled layers, because in every filled layer the total z angular momentum is 0, as one electron necessarily cancels out each other:
- magnetic quantum number varies from -l to +l, each with z angular momentum to and so each cancels the other out
- spin quantum number is either + or minus half, and so each pair of electron cancels the other out
So in this case, we only care about the 2 electrons in 2p2. Let's list out all possible ways in which the 2p2 electrons can be.
There are 3 p orbitals, with three different magnetic quantum numbers, each representing a different possible z quantum angular momentum.
We are going to distribute 2 electrons with 2 different spins across them. All the possible distributions that don't violate the Pauli exclusion principle are:
m_l +1 0 -1 m_L m_S
u_ u_ __ 1 1
u_ __ u_ 0 1
__ u_ u_ -1 1
d_ d_ __ 1 -1
d_ __ d_ 0 -1
__ d_ d_ -1 -1
u_ d_ __ 1 0
d_ u_ __ 1 0
u_ __ d_ 0 0
d_ __ u_ 0 0
__ u_ d_ -1 0
__ d_ u_ -1 0
ud __ __ 2 0
__ ud __ 0 0
__ __ ud -2 0
where:
m_l
is , the magnetic quantum number of each electron. Remember that this gives a orbital (non-spin) quantum angular momentum of to each such electronm_L
with a capital L is the sum of the of each electronm_S
with a capital S is the sum of the spin angular momentum of each electron
For example, on the first line:we have:and so the sum of them has angular momentum . So the value of is 1, we just omit the .
m_l +1 0 -1 m_L m_S
u_ u_ __ 1 1
- one electron with , and so angular momentum
- one electron with , and so angular momentum 0
TODO now I don't understand the logic behind the next steps... I understand how to mechanically do them, but what do they mean? Can you determine the term symbol for individual microstates at all? Or do you have to group them to get the answer? Since there are multiple choices in some steps, it appears that you can't assign a specific term symbol to an individual microstate. And it has something to do with the Slater determinant. The previous lecture mentions it: www.youtube.com/watch?v=7_8n1TS-8Y0 more precisely youtu.be/7_8n1TS-8Y0?t=2268 about carbon.
youtu.be/DAgEmLWpYjs?t=2675 mentions that is not allowed because it would imply , which would be a state
uu __ __
which violates the Pauli exclusion principle, and so was not listed on our list of 15 states.He then goes for and mentions:and so that corresponds to states on our list:Note that for some we had a two choices, so we just pick any one of them and tick them off off from the table, which now looks like:
ud __ __ 2 0
u_ d_ __ 1 0
u_ __ d_ 0 0
__ u_ d_ -1 0
__ __ ud -2 0
+1 0 -1 m_L m_S
u_ u_ __ 1 1
u_ __ u_ 0 1
__ u_ u_ -1 1
d_ d_ __ 1 -1
d_ __ d_ 0 -1
__ d_ d_ -1 -1
d_ u_ __ 1 0
d_ __ u_ 0 0
__ d_ u_ -1 0
__ ud __ 0 0
Then for the choices are:so we have 9 possibilities for both together. We again verify that 9 such states are left matching those criteria, and tick them off, and so on.
The Bondwell-2 is an early portable computer that was introduced in the early 1980s. It was known for its relatively compact design compared to other computers of its time, featuring a built-in CRT display and a keyboard. The Bondwell-2 typically ran on the CP/M operating system and was equipped with an Intel 8085 or similar processor.
The Intertec Superbrain is an early personal computer that was developed in the early 1980s. It is notable for its unique design, which included a built-in monitor and a modular architecture that allowed users to expand the system's capabilities. The Superbrain was based on the Zilog Z80 microprocessor and was compatible with CP/M, an operating system widely used during that era for personal computers.
MSX-DOS is an operating system designed for the MSX standard, which was a standardized home computer architecture developed in the early 1980s. Specifically, MSX-DOS is a disk-based operating system that was created to work with MSX computers equipped with disk drives. It was inspired by MS-DOS, the popular operating system for PCs at the time, but it was specifically tailored for the MSX hardware.
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