A list of brown dwarfs typically includes various known brown dwarfs identified by their spectral types, designations, and other characteristics. Brown dwarfs are substellar objects that are larger than planets but not massive enough to sustain hydrogen fusion at their cores, which distinguishes them from stars. The spectral types of brown dwarfs range from L to T and Y, indicating their temperature and composition.
Exozodiacal dust refers to a component of dust found in the vicinity of other stars, particularly within the habitable zones of those stars. It is analogous to the zodiacal light observed in our own solar system, which is the sunlight scattered by dust particles that are primarily located in the plane of the solar system, typically originating from comets and asteroid collisions.
A technology roadmap is a strategic planning tool that outlines the vision, goals, and roadmap for implementing technology within an organization or a specific project. It serves as a guide for aligning technology initiatives with business objectives, identifying the necessary resources, and establishing timelines for technology development and deployment. Key components of a technology roadmap include: 1. **Vision and Goals**: A clear articulation of the long-term vision for technology and specific goals that the organization aims to achieve.
The term "proposals" can refer to different things depending on the context. Here are some common interpretations: 1. **Business Proposals**: These are formal documents submitted to persuade an organization or individual to accept a service or product. Business proposals typically include background information, project objectives, methodology, budget estimates, and timelines. 2. **Research Proposals**: In academia, a research proposal outlines a plan for a research project.
Daylight redirecting film (DRF) is a type of architectural film designed to enhance the distribution of natural light within interior spaces. This film is typically applied to windows or skylights and functions by redirecting sunlight deeper into a building, thereby improving daylight penetration and reducing the need for artificial lighting during the day.
The term "Crash program" can refer to different concepts depending on the context. Here are a few possible interpretations: 1. **Educational Context**: In some educational or training programs, a "crash course" refers to an intensive, short-term course designed to cover a large amount of material quickly. These programs are typically aimed at providing a high-level overview or foundational knowledge in a specific subject.
The planning fallacy is a cognitive bias that refers to the tendency for individuals and groups to underestimate the time, costs, and risks of future actions while overestimating the benefits. This phenomenon often leads to overly optimistic predictions about how long tasks will take and how much they will cost, resulting in delays and budget overruns. The concept was first proposed by psychologists Daniel Kahneman and Amos Tversky in 1979.
A project plan is a formal document that outlines the scope, objectives, tasks, timelines, resources, and responsibilities related to a specific project. It serves as a roadmap for project execution and management, providing guidance to the project team and stakeholders throughout the project lifecycle. Here are the key components typically included in a project plan: 1. **Project Objectives:** Clear and measurable goals that the project aims to achieve.
PK-4 refers to a specific experiment conducted on the International Space Station (ISS), focusing on the study of plasmas and their behaviors in microgravity. PK-4 is an acronym for "Plasma Kinetics 4," and it aims to investigate complex plasmas, which are ionized gases containing a significant number of charged particles and neutral gas atoms. The experiment involves creating a controlled environment to observe how these complex plasmas behave under various conditions.
Plastic is a synthetic or semi-synthetic material made from polymers, which are large molecules composed of repeating structural units known as monomers. These polymers can be derived from natural sources (like cellulose) or synthesized from petroleum, natural gas, or other chemical feedstocks. Plastics are characterized by their versatility, durability, and malleability, which allow them to be molded into various shapes and forms.
The Versatile Toroidal Facility (VTF) is a research project focused on plasma physics and fusion energy. Located at the Massachusetts Institute of Technology (MIT), the VTF is designed to investigate the behavior of plasma in a toroidal (doughnut-shaped) configuration. The facility allows researchers to explore various plasma confinement techniques and study phenomena related to magnetically confined plasma, which is critical for understanding the potential for fusion energy as a clean and sustainable energy source.
Biodegradable plastics are types of plastics that are designed to break down more quickly and efficiently than traditional plastics under certain environmental conditions. They are made from renewable resources or petrochemicals and can decompose through the action of living organisms, such as bacteria, fungi, and other biological processes. There are two main types of biodegradable plastics: 1. **Biobased Plastics**: These are made from renewable resources such as plant materials (e.g., cornstarch, sugarcane).
Elastomers are a class of polymers that exhibit rubber-like elasticity. They are characterized by their ability to stretch and then return to their original shape, which is a result of their molecular structure. The unique properties of elastomers come from the long chains of molecules in their structure, which can be easily deformed when a force is applied but are able to recover their shape once the force is removed.
Plastic welding is a process used to join plastic materials together by melting the surfaces and allowing them to fuse as they cool. This technique is widely employed in various industries, including automotive, aerospace, packaging, and manufacturing, to create strong, durable bonds between plastic components.
Thermosetting plastics, often referred to as thermosets, are a type of polymer that undergoes a chemical change when subjected to heat and pressure, resulting in a hardened structure that cannot be remolded or reshaped after the initial curing process. This irreversible transformation is due to the formation of cross-links between polymer chains during the curing process, which gives thermosetting plastics their rigid and durable characteristics.
Acrylonitrile butadiene styrene (ABS) is a thermoplastic polymer commonly used in various applications due to its strength, toughness, and ability to be easily molded. It is a copolymer made from three monomers: 1. **Acrylonitrile** - This component provides chemical resistance and thermal stability. 2. **Butadiene** - This contributes to the impact resistance and toughness of the material, making it less brittle.
CAMPUS (which stands for "CAMPUS: A Collection of Academic and Medical Publications in the U.S.") is a database that is commonly used in academic and research settings. It typically includes a wide range of resources that pertain to academic and medical publications. However, databases may vary in naming and scope depending on the specific organization or institution that maintains them.
Chlorinated polyethylene (CM) is a synthetic polymer produced by the chlorination of polyethylene. It is a type of thermoplastic elastomer that incorporates chlorine atoms into the polyethylene chain. This modification enhances certain properties of polyethylene and gives CM unique characteristics, making it suitable for various applications. ### Key Properties: 1. **Chemical Resistance**: CM has improved resistance to chemicals, oils, and solvents compared to regular polyethylene.
Merrifield resin is a type of polymer resin commonly used as a solid support in solid-phase peptide synthesis (SPPS). It was developed by the chemist Robert Merrifield, who won the Nobel Prize in Chemistry in 1984 for his work on this method. The resin is typically made from polystyrene or a polystyrene-divinylbenzene copolymer and is functionalized with an appropriate linker that allows for the attachment of the growing peptide chain.
Fogbank is a name that can refer to different things depending on the context, but it is most commonly associated with a few specific areas: 1. **Concealed products or technology**: In some contexts, "Fogbank" is used to describe certain technologies that can obscure, shield, or cloak objects, often related to military or defense applications. This could be aimed at providing stealth capabilities.
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





