A "snap cap" is a type of dummy cartridge designed for use in firearms. Primarily, snap caps are used for training and practice. They allow the user to cycle the action of a firearm without firing a live round, which can help in practicing malfunctions, dry-firing exercises, and ensuring that the firearm operates smoothly. The design usually includes a soft primer that can absorb the impact of the firing pin, helping to protect the firearm's internals during dry firing.
"Wadding" can refer to a few different concepts depending on the context: 1. **Textiles and Sewing**: In sewing and quilting, wadding is a type of padded material used to provide insulation, warmth, or cushioning. It is often made from cotton, polyester, or a blend of fibers and is placed between layers of fabric in quilts, blankets, and other textile projects.
Artillery stubs refer to a system used in software development, specifically in the context of testing and simulation. The term is often associated with stubbing in automated testing, where stubs are used to simulate the behavior of complex components that a system interacts with. In this context, "artillery stubs" could refer to specialized stubs used for testing applications that involve heavy artillery systems or simulations related to military operations.
The term "aircraft artillery" can refer to various types of weaponry mounted on or used by aircraft. This includes guns, cannon, and other armaments designed to be operated from a flying platform, primarily intended for offensive or defensive purposes. Here’s a list of some notable types of aircraft artillery: ### Fixed Wing Aircraft Armaments 1. **Boeing B-17 Flying Fortress** - Equipped with multiple .50 caliber machine guns.
A rifled muzzle loader (RML) is a type of firearm that employs rifling—helical grooves cut into the bore of the barrel—to stabilize a projectile and improve accuracy. Unlike smoothbore muzzle loaders, which have a smooth interior barrel and were typically used for shot or round balls, rifled muzzle loaders are designed to be loaded from the muzzle (the open end of the barrel) and use bullets with a diameter that fits tightly within the rifled barrel.
"Gravity loss" typically refers to a loss of potential energy that occurs in various contexts, particularly in physics and engineering. It is commonly associated with the launch of spacecraft and rockets, where it describes the energy lost due to the gravitational pull of a celestial body (like Earth) as a vehicle ascends. Gravity loss can significantly impact the performance and efficiency of a launch, as it requires additional energy to counteract the effects of gravity.
Nodal precession, often referred to in the context of celestial mechanics, describes the phenomenon where the orbit of a celestial body—such as a satellite or a planet around a star—slowly shifts its orientation over time. Specifically, it refers to the motion of the orbital nodes, the points where the orbit crosses a reference plane, commonly the plane of the ecliptic (the Earth’s orbital plane around the Sun).
Transposition, docking, and extraction can refer to different concepts depending on the context in which they are used. Here’s an overview of what these terms generally mean in various fields: ### 1. **Transposition**: - **Mathematics and Music**: In mathematics, transposition can refer to switching places of elements within matrices or vectors. In music, it involves changing the key of a piece, effectively shifting all notes up or down by the same interval.
The Journal of Chemical Physics (JCP) is a peer-reviewed scientific journal that publishes research articles in the field of chemical physics. It is an authoritative source for studies that bridge the disciplines of chemistry and physics, covering a wide range of topics such as molecular dynamics, thermodynamics, quantum chemistry, and spectroscopy, among others. Established in 1933, JCP is published by the American Institute of Physics (AIP) and has a reputation for high-quality, original research.
Porous media, often referred to as porous materials or porous media, are materials that contain pores (voids or spaces) within their structure. These pores can occupy a significant fraction of the volume of the material, allowing fluids (gases or liquids) to flow through them. Porous media can be found in various forms and applications, ranging from natural materials to engineered structures.
Radiation effects refer to the various biological, chemical, and physical impacts that ionizing radiation can have on living organisms and materials. Ionizing radiation includes particles (like alpha and beta particles) and electromagnetic waves (such as gamma rays and X-rays), which have enough energy to remove tightly bound electrons from atoms, thereby creating ions. ### Biological Effects 1. **Cellular Damage**: Ionizing radiation can cause direct damage to DNA and other vital cellular components.
Nickel-aluminium alloys are a specific type of alloy composed primarily of nickel and aluminum, often combined with other elements to enhance certain properties. These alloys are known for their excellent strength, corrosion resistance, and heat resistance, making them suitable for a variety of industrial applications. ### Key Characteristics: 1. **Corrosion Resistance**: Nickel-aluminium alloys exhibit strong resistance to oxidation and corrosion, which is particularly beneficial in harsh environments, such as marine applications or chemical processing.
A honeycomb structure is a geometric configuration that resembles a honeycomb, consisting of a series of interconnected hexagonal or polygonal cells. This design is prevalent in nature and is commonly found in beehives, where honeybees create hexagonal wax cells for storing honey and raising their young. **Key Characteristics of Honeycomb Structures:** 1. **Efficiency**: The hexagonal shape allows for the most efficient use of material, providing a strong structure with minimal weight.
Ultra-high temperature ceramics (UHTCs) are a class of materials that can withstand extremely high temperatures, typically above 2000°C (3632°F), without melting or significantly degrading. These materials are characterized by their high melting points, thermal stability, and mechanical strength at elevated temperatures, making them ideal for applications in harsh environments. UHTCs are primarily composed of refractory compounds such as carbides, nitrides, and borides of materials like zirconium, hafnium, and tungsten.
Bonding in solids refers to the interactions that hold the atoms or ions together to form a solid structure. Different types of bonding can occur in solids, and the nature of these bonds significantly influences the properties of the material. The primary types of bonding in solids are: 1. **Ionic Bonding**: This occurs when there is a transfer of electrons from one atom (usually a metal) to another atom (usually a non-metal).
Drago Kolar could refer to various contexts, such as a person's name or possibly a fictional character. However, as of my last knowledge update in October 2023, there is no widely recognized figure or concept specifically associated with the name Drago Kolar.
Rehydroxylation dating, also known as rehydroxylation dating or RHX dating, is a dating method used to determine the age of fired clay materials, such as ceramics and bricks. This technique is based on the principle that when clay is fired at high temperatures, the water content in the minerals is driven off. Once the material is exposed to the environment, it begins to gradually reabsorb moisture over time.
Crystallographic disorder refers to a situation in solid materials, particularly in crystalline solids, where there is a deviation from the ideal periodic arrangement of atoms or molecules in the crystal lattice. This disorder can manifest in various forms, such as: 1. **Occupancy Disorder**: Certain atomic sites in the crystal structure may be occupied by different types of atoms or molecules with varying probabilities.
Elastic Recoil Detection (ERD) is a nuclear analytical technique used primarily for the analysis of thin films and surface layers of materials. In this method, high-energy ions (like protons or alpha particles) are directed at a target sample. When these ions collide with the nuclei of atoms in the sample, some of the target atoms can be recoiled out of the sample due to the elastic scattering process.
The Flory–Rehner equation is a fundamental relationship used in polymer science to describe the thermodynamics of crosslinked poly(methyl methacrylate) (PMMA) networks and other similar polymer systems. It relates the degree of swelling of a crosslinked polymer network in a solvent to the interaction between the polymer and solvent, as well as the network's elastic properties.

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