The Armed Forces Special Weapons Project (AFSWP) was a United States military organization created in the late 1940s, specifically in 1949, to manage and oversee the development, production, and deployment of nuclear weapons for the United States Armed Forces. The AFSWP played a critical role in coordinating efforts related to atomic and thermonuclear weapons during the early years of the Cold War. The AFSWP was responsible for ensuring that these weapons were integrated into the U.S.
The Atomic Weapons Rewards Act of 1955 was a U.S. law designed to provide compensation to individuals who had given substantial information leading to the development of atomic weapons. The act was part of the broader efforts during the Cold War to encourage the sharing of critical information about atomic technology, especially concerning espionage and improvements in nuclear weapons design. Under this act, individuals who provided information that was deemed useful in advancing the U.S. atomic weapons program could be rewarded financially.
Crateology is not a widely recognized term in mainstream academic or professional fields. It could be a blend of "crate" and "ology," implying the study or systematic exploration of crates, containers, or storage solutions. However, it might also be a niche term used in a specific context, such as logistics, packaging, or even a playful term in a subculture or hobby related to shipping and storage.
The Energy Employees Occupational Illness Compensation Program (EEOICPA) is a U.S. federal program established to provide compensation and medical benefits to employees who worked in the United States Department of Energy (DOE) facilities and contracted sites and who have developed certain illnesses as a result of their work. The program primarily focuses on illnesses related to exposure to toxic substances, radiation, and other hazardous conditions associated with the production of nuclear weapons and energy.
The Nuclear Non-Proliferation Act of 1978 (NNPA) is a significant piece of legislation in the United States aimed at preventing the spread of nuclear weapons and promoting peaceful uses of nuclear energy. The act builds upon the principles of the earlier Nuclear Non-Proliferation Treaty (NPT), which was opened for signature in 1968 and sought to limit the proliferation of nuclear arms.
"Race for the Bomb" is a historical game and educational experience centered around the development of nuclear weapons during World War II and the subsequent Cold War period. It typically involves players taking on roles of historical figures, strategizing decisions around scientific advancements, political negotiations, and military actions related to nuclear arms. The objective is often to explore the ethical and moral implications of the nuclear arms race while simulating the complexities faced by leaders and scientists of the time.
"The Four Faces of Nuclear Terrorism" is a framework used to categorize potential scenarios and threats associated with nuclear terrorism. The concept outlines different ways in which nuclear materials or capabilities could be used by terrorist organizations.
Lithium hydride (LiH) is an inorganic chemical compound composed of lithium and hydrogen. It is a white solid at room temperature and is classified as an ionic hydride, where lithium (Li) acts as a cation and hydride (H⁻) acts as an anion. Here are some key points about lithium hydride: 1. **Preparation**: LiH can be produced by the direct reaction of lithium metal and hydrogen gas at high temperatures.
An NMR tube, or Nuclear Magnetic Resonance tube, is a specialized glass tube used to hold samples for analysis in NMR spectroscopy. NMR spectroscopy is a powerful analytical technique used to determine the structure and properties of molecules by observing the behavior of nuclei in a magnetic field. Key features of NMR tubes include: 1. **Material:** NMR tubes are typically made from high-quality glass or sometimes from specific types of plastic that can withstand the conditions within an NMR spectrometer.
G. Marius Clore is a prominent scientist known for his contributions to the field of structural biology, particularly in the study of biomolecular NMR (Nuclear Magnetic Resonance) spectroscopy. He has been involved in research focusing on the structural characterization of proteins, protein complexes, and nucleic acids, applying advanced methods to understand their function and dynamics.
A gradient echo (GRE) is a type of magnetic resonance imaging (MRI) technique used to create images of internal structures in the body. It utilizes a combination of rapidly alternating magnetic field gradients and radiofrequency (RF) pulses to generate images. Unlike spin echo techniques that rely on 180-degree refocusing pulses to correct for inhomogeneities in the magnetic field, gradient echo sequences use gradients to manipulate the phase of the spins directly, allowing for faster imaging times.
Magnetic Resonance Force Microscopy (MRFM) is a powerful and advanced technique that combines principles of magnetic resonance imaging (MRI) and atomic force microscopy (AFM) to achieve high-resolution imaging and characterization of material properties at the nanoscale. It allows researchers to probe and manipulate the magnetic and chemical properties of samples with very high sensitivity.
Paul Lauterbur was an American chemist and one of the pioneers of magnetic resonance imaging (MRI). Born on May 6, 1929, and passing away on March 27, 2023, Lauterbur made significant contributions to the development of techniques that allow for the imaging of internal structures of the body without the need for invasive procedures.
A Nuclear Magnetic Resonance (NMR) spectra database is a collection of NMR spectra that have been produced from various chemical compounds. NMR spectroscopy is an analytical technique used to determine the structure, dynamics, and environment of molecules based on the magnetic properties of certain nuclei. The most commonly studied nucleus is hydrogen (\(^1H\)) but carbon (\(^13C\)), nitrogen (\(^15N\)), and phosphorus (\(^31P\)) are also frequently used.
Residual chemical shift anisotropy (RCSA) refers to a phenomenon observed primarily in the context of nuclear magnetic resonance (NMR) spectroscopy, particularly in solid-state NMR and biomolecular NMR. It is an important concept in understanding how molecular dynamics and interactions affect chemical shifts of nuclei in a sample. In NMR, chemical shifts arise from the magnetic environments surrounding nuclei, which can be influenced by the electronic environment created by nearby atoms and molecular structure.
Neutron moderators are materials used in nuclear reactors to slow down fast neutrons produced during fission processes, making them more likely to interact with fissile material (such as uranium-235 or plutonium-239) and sustain a chain reaction. Fast neutrons have high kinetic energy and are less likely to cause fission when they collide with fuel nuclei, so slowing them down increases the probability of further reactions.
Nuclear fusion is a process in which two light atomic nuclei combine to form a heavier nucleus, accompanied by the release of a significant amount of energy. This process is the source of energy for stars, including our sun, where hydrogen nuclei fuse to form helium under immense pressure and temperature conditions.
Nuclear reactor coolants are substances used to transfer heat away from the reactor core during the nuclear fission process. The primary function of a coolant is to remove heat generated by the fission reactions in the fuel rods and to prevent overheating, which could lead to safety hazards, including the potential for a meltdown. Coolants play a crucial role in the overall safety and efficiency of a nuclear reactor.
Antimony is a chemical element with the symbol **Sb** (from the Latin "stibium") and atomic number **51**. It is a metalloid, which means it has properties of both metals and non-metals. Antimony is known for its brittle nature and is often found in nature primarily in the form of various sulfide minerals, particularly stibnite (Sb₂S₃).
Neptunium(VI) fluoride is an inorganic compound composed of neptunium and fluorine, with the chemical formula \( \text{NpF}_6 \). In this compound, neptunium is in the +6 oxidation state, which is typical for this actinide element when forming various compounds.

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