Jean Baptiste Perrin by Ciro Santilli 40 Updated 2025-07-16
This seems like a cool dude. Besides a hardcore scientist, he also made many important contributions to the French education and research system.
"Flower snark" typically refers to a playful or humorous type of sarcasm or witty commentary centered around flowers, gardening, or the aesthetics associated with them. It can manifest in various ways, such as funny social media posts, witty remarks about plant care, or tongue-in-cheek observations about floral design and gardening trends.
The Franklin graph is a specific type of mathematical graph named after the American polymath Benjamin Franklin. It is notable for being a 12-vertex, 18-edge graph that can be geometrically embedded in three-dimensional space without any edges crossing. The Franklin graph is often used in the study of topology and graph theory due to its interesting properties. One of the notable features of the Franklin graph is its connectivity; it is 3-connected, meaning that removing any two vertices will not disconnect the graph.
A Holt graph is a type of graphical representation used to visualize relationships between nodes in a network, specifically focusing on the outcomes of a Holt-style forecasting method in time series analysis. The Holt method involves two smoothing parameters: one for the level of the series and another for the trend. The graphs typically highlight how forecasts evolve over time, illustrating both the historical data and the predictions based on the model.
Norton Commander is a file management program for DOS and early versions of Windows that was developed by Peter Norton Computing and later by Symantec. It was first released in 1986 and became very popular for its dual-pane interface that allowed users to manage files more efficiently compared to traditional command-line utilities. The main features of Norton Commander included: 1. **Dual-pane Interface**: Users could view two directories side by side, making it easier to copy, move, and compare files between two locations.
Norwegian materials scientists are researchers and professionals in Norway who specialize in the study and development of materials. This field encompasses a wide range of disciplines, including physics, chemistry, engineering, and nanotechnology. These scientists work on understanding the properties, structures, and behaviors of various materials, such as metals, polymers, ceramics, and composites, to develop new materials or improve existing ones.
Matrix-free methods refer to computational techniques used for solving numerical problems, particularly in the context of large-scale linear algebra problems, optimization, and differential equations, without explicitly forming and storing the matrices involved. These methods are particularly beneficial when dealing with large matrices where storing the complete matrix is infeasible due to memory constraints. Instead of relying on the matrix itself, matrix-free methods utilize only the ability to perform matrix-vector products or related operations.
Dask is an open-source parallel computing library in Python that is designed to scale computations from single machines to large clusters. It allows for efficient processing of large datasets that do not fit into memory, and it enables users to leverage multiple cores in a CPU or multiple machines in a distributed computing environment.
The term "Mathieu groupoid" might not be widely recognized in the same way as Mathieu groups, which are a family of highly symmetric groups that play an important role in various areas of mathematics, particularly in group theory, combinatorics, and algebraic geometry. Mathieu groups are finite groups that arise from the permutation of sets and are particularly known for their properties related to symmetry and error-correcting codes.
Tensor algebra is a mathematical framework that extends the concepts of linear algebra to accommodate tensors, which are multi-dimensional arrays that generalize scalars, vectors, and matrices. In simpler terms, tensors can represent data in more complex ways compared to traditional linear algebra structures. ### Key Concepts in Tensor Algebra: 1. **Tensors**: - A scalar is a 0th-order tensor. - A vector is a 1st-order tensor.
Internet Explorer Developer Tools is a set of web development and debugging tools built into Internet Explorer 8 and later versions. These tools offer developers a way to inspect, debug, and optimize their web pages directly within the browser. Here are some of the key features of Internet Explorer Developer Tools: 1. **Element Inspection**: Developers can examine and modify HTML and CSS of a webpage in real-time. This allows for immediate feedback on changes.
The term "Nuclear Energy Board" can refer to different regulatory bodies or organizations in various countries that oversee and manage nuclear energy policies, safety, and regulations. However, there isn't a specific global entity universally known as the "Nuclear Energy Board." In many countries, nuclear regulatory bodies are responsible for: 1. **Safety Oversight**: Ensuring the safe operation of nuclear power plants and facilities.
Nuclear missiles are a type of weapon designed to deliver a nuclear warhead to a target. They are part of a category of weapons known as nuclear weapons, which derive their destructive power from nuclear reactions—either fission (splitting heavy atomic nuclei) or fusion (combining light atomic nuclei).
India has a well-established nuclear power program, and several companies and organizations are involved in the development, construction, and operation of nuclear power plants. Here are some of the key entities involved in nuclear power in India: 1. **Nuclear Power Corporation of India Limited (NPCIL)**: NPCIL is the primary company responsible for the design, construction, operation, and maintenance of nuclear power plants in India. It is a public sector enterprise under the Department of Atomic Energy (DAE).
Reentrancy in computing refers to the ability of a piece of code, typically a function or a subroutine, to be safely executed by multiple threads or processes concurrently without causing any unintended interference or data corruption. This characteristic is vital in multitasking and multithreaded environments where the same code may be accessed by different execution contexts simultaneously.
Christine Hrenya is a notable figure in the field of chemical and biological engineering, recognized for her work in computational fluid dynamics, particle dynamics, and the behavior of granular materials. She has contributed significantly to research in areas such as multiphase flows and the interactions between particles in various engineering processes. Hrenya also has a role in academia, typically associated with teaching and mentoring students in engineering disciplines.
Elton N. Kaufmann is not a widely recognized figure or a name associated with a major event or concept in popular culture or history as of my last update in October 2023. It's possible that he may be a private individual or someone who has gained prominence in a specific niche or field that is not broadly known.

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!
We have two killer features:
  1. 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-calculus
    Articles 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/derivative
  2. 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.
    Figure 2.
    You can publish local OurBigBook lightweight markup files to either https://OurBigBook.com or as a static website
    .
    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.
  3. https://raw.githubusercontent.com/ourbigbook/ourbigbook-media/master/feature/x/hilbert-space-arrow.png
  4. Infinitely deep tables of contents:
    Figure 6.
    Dynamic article tree with infinitely deep table of contents
    .
    Descendant pages can also show up as toplevel e.g.: ourbigbook.com/cirosantilli/chordate-subclade
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