The Galerie des Carrosses, also known as the Gallery of Coaches, is a notable exhibition space located in the Palace of Versailles, France. It houses a collection of historic carriages that were used by French royalty, particularly during the reign of Louis XIV and his successors. The gallery showcases various types of coaches, including state coaches, ceremonial vehicles, and everyday carriages that reflect the opulence and craftsmanship of the era.
Surfactant, short for surface-active agent, is a substance that reduces surface tension in liquids. Surfactants are typically amphiphilic molecules, meaning they have both hydrophilic (water-attracting) and hydrophobic (water-repelling) parts. This unique structure allows them to accumulate at interfaces, such as between air and water or oil and water, altering the properties of the surface.
Orders of magnitude are a way of comparing quantities by their scale or size, typically expressed as a power of ten. In this system, each order of magnitude indicates a tenfold increase or decrease in size. For example: - A difference of one order of magnitude (10^1) means that one quantity is 10 times larger or smaller than another. - A difference of two orders of magnitude (10^2) means that one quantity is 100 times larger or smaller than another.
Pressure is defined as force per unit area and is measured in various units depending on the system of measurement being used. Here are some common units of pressure: 1. **Pascal (Pa)**: The SI unit of pressure, which is defined as one newton per square meter (N/m²). 2. **Bar**: A metric unit of pressure, where 1 bar is equal to 100,000 pascals (100 kPa).
Saybolt Universal Viscosity (SUV) is a measure of the viscosity of a liquid, typically used for petroleum products and some other fluids. It is determined using the Saybolt viscometer, an apparatus designed to measure the time it takes for a specific volume of liquid to flow through a calibrated orifice at a specified temperature (typically 60°F or 15.6°C). The viscosity value is expressed in seconds and is referred to as Saybolt Universal Seconds (SUS).
"Savart" may refer to a couple of different things depending on the context, but it is most commonly associated with the "Savart wheel," which is an instrument used in physics and acoustics. The Savart wheel is a device used to produce and analyze sound waves. It consists of a rotating disc with holes at regular intervals. When air is passed through these holes as the disc spins, it generates a series of tones.
Tarski's high school algebra problem refers to a challenge posed by mathematician Alfred Tarski regarding the foundations of algebra and the nature of mathematical understanding, particularly at the high school level. Tarski was interested in the formalization of mathematics and the nature of reasoning within mathematical systems. Though Tarski's problem itself isn't typically described in precise terms, it typically revolves around the idea of analyzing the logical and structural aspects of algebraic reasoning that high school students engage in.
The Abundance Conjecture is a concept within the field of number theory, focusing on the behavior of certain algebraic integers. Specifically, it deals with the distribution of prime numbers and the density of subsets of integers with specific properties. While the conjecture has been discussed in various contexts, it is often associated with the idea that among the integers, there exists a rich abundance of those that exhibit certain arithmetic properties, such as being prime or having a specific number of divisors.
Sum of three cubes by Ciro Santilli 40 Updated 2025-07-16
Compared to Waring's problem, this is potentially much harder, as we can go infinitely negative in our attempts, there isn't a bound on how many tries we can have for each number.
In other words, it is unlikely to have a Conjecture reduction to a halting problem.
Video 1.
3 as the sum of the 3 cubes by Numberphile (2019)
Source.
Per Osland, born on November 17, 1964, is a Norwegian politician affiliated with the Progress Party (Fremskrittspartiet). He has served in various political capacities, including as a Member of Parliament for Nordland from 2017 to 2021. Osland has also served as the mayor of Bø in Vesterålen and has been involved in local government and political activities at multiple levels.
Øyvind Grøn is a Norwegian mathematical physicist known for his work in the field of quantum mechanics, particularly on topics related to quantum field theory and the foundations of quantum mechanics. He has contributed to the understanding of various physical phenomena and has published papers on related subjects.
The Gunnerus Sustainability Award is an honor awarded to individuals or organizations that have made significant contributions to sustainability and environmental conservation. Named after the notable Norwegian naturalist and priest Johan Ernst Gunnerus, the award seeks to promote and recognize innovative approaches to sustainable development and environmental stewardship. The award is typically presented in recognition of achievements that align with the United Nations’ Sustainable Development Goals (SDGs) and aims to inspire further initiatives in sustainability.
The number 613 can refer to a variety of concepts depending on the context in which it is used. Here are a few interpretations: 1. **Mathematics**: 613 is an integer that comes after 612 and before 614. It is an odd number and has no special mathematical properties like being a prime number, as it can be divided by 1, 13, 47, and 613 itself.
"The Curious Incident of the Dog in the Night-Time" is a novel written by British author Mark Haddon, published in 2003. The story is narrated by Christopher Boone, a 15-year-old boy who describes himself as "a mathematician with some behavioral difficulties," which suggests that he is on the autism spectrum. The plot begins when Christopher discovers the dead body of his neighbor's dog, Wellington, and sets out to solve the mystery of its death.

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