Hermann–Mauguin notation, also known as the international notation or Schoenflies notation, is a system used in crystallography to describe the symmetry and properties of crystal structures. This notation helps categorize crystals based on their symmetry operations, such as rotations, reflections, and inversions, allowing scientists to communicate the structural characteristics of different crystalline materials succinctly. In Hermann–Mauguin notation, a crystal system is represented by a unique symbol that combines letters and numbers.
"Dye-and-pry" commonly refers to a technique used in the field of chemistry and materials science, particularly in the study of polymers. However, the term can also be associated with methods in biology, such as gene expression analysis. In the context of polymers, dye-and-pry typically involves labeling or tagging a polymer with a fluorescent dye to study its properties. This method can help in understanding the interactions of polymers, their stability, or their behavior under various conditions.
Time-of-flight ultrasonic determination of 3D elastic constants is an experimental technique used to measure the elastic properties of materials, particularly in three dimensions (3D). This method utilizes ultrasonic waves to assess how a material responds to stress and strain, allowing for the calculation of its elastic constants, which are fundamental parameters that describe the material's mechanical behavior.
The Dick Volz Award is an accolade presented to honor outstanding achievement in the field of electrical and computer engineering and is typically associated with the University of Idaho. Named after Dick Volz, a long-serving faculty member in the university's electrical and computer engineering department, the award recognizes individuals for their professional contributions, service, and impact on the engineering community or their respective fields.
A barrel nut is a type of fastener that is often used in conjunction with a bolt to secure two or more components together. It is typically a cylindrical piece of metal with internal threads that allow a bolt to be screwed into it. Barrel nuts are commonly found in furniture assembly, especially in items like flat-pack furniture, where they provide a secure connection between panels without requiring access to the other side of the joint.
A "sand slinger" is a type of machinery or equipment used primarily in construction, foundry work, and various industries where the application of sand is necessary. Its main function is to propel sand or other materials at high speeds for purposes such as sandblasting, surface cleaning, or creating sand molds in casting processes.
The physics of skiing involves several fundamental concepts of classical mechanics, including forces, motion, energy, and friction. Here’s a breakdown of the key physical principles at play in skiing: ### 1. **Forces Acting on a Skier** - **Gravity:** The primary force acting on a skier is gravity, pulling them down the slope. The steeper the slope, the greater the component of gravitational force acting to accelerate the skier downwards.
Decambering is a term used primarily in the context of automotive suspension and wheel alignment. It refers to the adjustment of the camber angle of a vehicle's wheels. Camber is the angle of the wheels relative to the vertical axis; it can be positive (tilting outward at the top), negative (tilting inward at the top), or neutral (straight up and down). Decambering specifically involves reducing the negative camber angle.
Electrolysis is a chemical process that uses electrical energy to drive a non-spontaneous chemical reaction. It involves the breaking down of a compound into its individual elements or simpler compounds through the application of an electric current. Electrolysis typically occurs in an electrolytic cell, which consists of two electrodes (an anode and a cathode) immersed in an electrolyte solution. Key components of electrolysis include: 1. **Electrodes**: These are conductive materials that allow the flow of electricity.
The North Magnetic Pole is the point on the Earth's surface where the planet's magnetic field points vertically downwards. This location is not fixed and moves over time due to changes in the Earth's magnetic field, which are caused by the movement of molten iron within the Earth's outer core.
Yttria-stabilized zirconia (YSZ) is a crystalline compound formed by the addition of yttrium oxide (Y2O3) to zirconium dioxide (ZrO2). This stabilization process is essential because zirconia can exist in different crystalline forms (phases), and at high temperatures, it can transform from its stable monoclinic form to a tetragonal or cubic form. However, this phase transformation can make pure zirconia brittle.
The Caledonian Ocean, also known as the Caledonian Sea, refers to a prehistoric ocean that existed during the Paleozoic Era, particularly during the Silurian and early Devonian periods, around 440 to 360 million years ago. It was situated between the continents of Laurentia (which is now part of North America and Greenland) and Baltica (which included parts of modern-day Europe and Scandinavia).
Kane Basin is a body of water located between Greenland and the Arctic archipelago of Canada. Specifically, it is situated between the northeastern coast of Greenland and the southwestern shore of Ellesmere Island, which is part of Canada. Kane Basin is known for its cold Arctic waters and is part of the larger Nares Strait, which connects Baffin Bay in the west to the Arctic Ocean in the east.
HD 87643 is a star located in the constellation of Centaurus, approximately 330 light-years away from Earth. It is classified as a B-type main-sequence star, which means it is a hot, luminous star with a surface temperature significantly higher than that of the Sun. Specifically, its spectral type is B5V, indicating that it has a strong blue hue and emits a large amount of ultraviolet radiation.
The product operator formalism is a mathematical framework used in the field of Magnetic Resonance Imaging (MRI) and Nuclear Magnetic Resonance (NMR) to describe the behavior of spin systems under various operations, such as radiofrequency (RF) pulse sequences and interactions with magnetic fields. It enables physicists and chemists to analyze and manipulate the quantum states of spins in a structured way.
IntelliServ is a technology developed by Halliburton, primarily used in the oil and gas industry. It is a real-time drilling data management system designed to enhance the drilling process's efficiency and safety. The platform integrates data from various sources, including sensors on drilling equipment, to provide operators with actionable insights. This allows for better decision-making during drilling operations, reducing downtime and improving overall performance. IntelliServ leverages advanced data analytics and connectivity to facilitate real-time monitoring and control of drilling activities.
Physics in Medicine and Biology is an interdisciplinary field that applies principles and methods from physics to understand and solve problems in medicine and biology. The integration of physics into these areas helps improve diagnostics, treatment, and understanding of biological processes. Here are some key aspects of the field: 1. **Medical Imaging**: Techniques such as X-ray, MRI (Magnetic Resonance Imaging), CT (Computed Tomography), and ultrasound rely heavily on physics principles.
Numerical modeling in echocardiography refers to the application of mathematical and computational techniques to simulate and analyze the dynamics of heart structures and functions based on echocardiographic data. This process involves creating models that can replicate the behavior of the heart's chambers, valves, and blood flow under various physiological and pathological conditions.
Strain rate imaging is an advanced ultrasound technique used primarily in the assessment of myocardial function. It involves measuring the deformation of tissue over time, allowing for the evaluation of how quickly and effectively the myocardial fibers are contracting and relaxing. This technique provides valuable insights into cardiac mechanics, which can be useful in diagnosing conditions such as heart disease, heart failure, and other cardiac conditions.
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 2. You can publish local OurBigBook lightweight markup files to either OurBigBook.com or as a static website.Figure 3. Visual Studio Code extension installation.Figure 5. . 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. - 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