The Sun is a nearly perfect ball of hot plasma, a luminous star at the center of our solar system. It is primarily composed of hydrogen (about 74% of its mass) and helium (about 24%), with trace amounts of heavier elements. The Sun is about 4.6 billion years old and is classified as a G-type main-sequence star (G dwarf). The Sun plays a crucial role in the solar system, providing the light and warmth necessary for life on Earth.
A dual quaternion is a mathematical object that extends the concept of quaternions to represent transformations in three-dimensional space, such as rotations and translations. Dual quaternions combine the properties of quaternions, which can represent rotations, with dual numbers, which can represent translations.
Lacquer is a clear or colored coating that is applied to surfaces to create a durable, glossy finish. It is commonly made from a resin, a solvent, and sometimes other additives to enhance its properties. Lacquer is used in a variety of applications, including woodworking, metal finishing, and musical instruments. Here are some key characteristics of lacquer: 1. **Durability**: Lacquer dries quickly and forms a hard, protective layer that resists scratches, moisture, and general wear.
Bitty Baby is a line of dolls produced by American Girl, designed for younger children, typically ages 3 and up. These dolls are meant to be a first baby doll experience, encouraging imaginative play and nurturing skills. Bitty Baby dolls come in a variety of skin tones, hair colors, and styles, allowing children to choose dolls that they can relate to or enjoy.
One of the four following states:
The Bell states are entangled and non-separable. Intuitively, we can see that when we measure that state, the values of the first and second bit are strictly correlated. This is the hallmark of quantum computation: making up states where qubits are highly correlated to match a specific algorithmic answer, and opposed to uniformly random noise. For example, the Bell state circuit is a common hello world, e.g. it is used in the official Qiskit hello world.
Instead of shining a light over the entire sample to saturate it, you illuminate just a small bit instead.
He was basically saying that this truly brings the resolution to the actual physical limits, going much much beyond 2014 Nobel prize levels.
Illumination patterns for STED microscopy
. Source. Login walls. Lol.
math.mit.edu/classes/18.783, Wow, good slides! Well organized site! This is a good professor! And brutal course. 25 lectures, and lecture one ends in BSD conjecture!
Some points from math.mit.edu/classes/18.783/2022/LectureSlides1.pdf:
As of 2022:
- www.ox.ac.uk/students/fees-funding/fees/rates gives study fees. Almost all courses are about 9k pounds / academic year. Courses take minimum 3 years, with an optional 4th year masters. The costs of masters can be higher however, though most aren't much.It is funny to note how Public Policy is comically priced at 45,890 for a course without laboratories, how can a country be so corrupt? :-) It was later brought to Ciro's attention that the reason is that those courses are not usually paid by individuals, but by their employers...Another eye popping one is Mathematical & Computational Finance MSc for £36,370.
- www.ox.ac.uk/students/fees-funding/living-costs gives living costs, an average 12k for the usual 9 month period
- there is the Crankstart scholarship: www.ox.ac.uk/admissions/undergraduate/student-life/help-with-the-cost/crankstart-scholarships which gives 5k/year to students whose families have less than 27k/year income, and values decrease from there to 60k/year income where they become zero.It is funny to note that the scholarship was previously named after a Welsh billionaire who studied there and donated and his wife, Michael Moritz and wife Harriet Heyman. It is actually the Welsh who are creating those scholarships for the English! It is so funny to see. His background is quite amazing, from historian to journalist to venture capitalist.It was later renamed Crankstart after the Crankstart Foundation, presumably to help gather funds from others, but it is just still led by Michael.It does appear that most/all of the natural sciences ones are reasonably priced, perhaps they are subsided.
The median household income at the time was 31k[ref]. Clearly, putting one child through university with that income would be basically impossible, you would pay 19 - 5 = 14k/year, almost half of your income. Two children would be impossible. Remember how each family needs to have two children minimum to perpetuate life?
- cherwell.org/2023/10/02/27000-for-a-library-card/ £27,000 for a library card? published on the Cherwell
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