The history of metallurgy is a fascinating journey through time that highlights the development and use of metals by human societies. Here’s a brief overview: ### Prehistoric Metallurgy - **Copper Age (Chalcolithic)**: The earliest known use of metals dates back to around 6000 BCE in the Near East, where copper was initially used in its native form. This period marked the transition from stone tools to metal tools.
Ian Watmore is a British businessman and sports executive known for his roles in various organizations within the sports and technology sectors. He has served as the Chief Executive of the England and Wales Cricket Board (ECB) and held various senior positions in the private sector, including consulting and management roles at companies like Accenture. Watmore has been involved in strategic leadership and development within sports organizations, focusing on governance, administration, and the promotion of sports at various levels.
The IBM 2260 is a graphical display terminal introduced by IBM in the 1970s. It was designed for interaction with mainframe computers and was notable for its use of a cathode ray tube (CRT) display. The terminal allowed users to interact with applications by displaying graphics and text, making it one of the earlier devices to support more sophisticated graphical interfaces for computing.
The IEEE Transactions on Instrumentation and Measurement is a peer-reviewed academic journal published by the Institute of Electrical and Electronics Engineers (IEEE). The journal focuses on the theory, technology, and application of instrumentation and measurement techniques, serving a diverse range of fields such as engineering, science, and technology. Key aspects of the journal include: 1. **Scope**: It covers a broad spectrum of topics related to measurement science, technology, and instrumentation.
An imaging phantom is a standardized object or model used in medical imaging to evaluate, calibrate, and validate imaging systems and techniques. Phantoms are designed to simulate specific imaging characteristics of human tissues or organs, allowing for quality assurance and performance testing in imaging modalities such as X-ray, MRI, CT, ultrasound, and nuclear medicine. Different types of imaging phantoms are used for various purposes: 1. **Calibration**: To ensure that imaging equipment is producing accurate and consistent results.
"Incandescence" is a science fiction novel by the author Greg Egan, published in 2008. The story is set in a far-future universe and follows two main narratives: one located on a distant planet called the "Blues" and another that takes place in the "Earlies," a region of space where unique discoveries about consciousness and existence are explored.
Infrared and thermal testing are techniques used to detect heat patterns and anomalies in materials and systems through the use of infrared radiation. These methods rely on the principle that all objects emit infrared energy based on their temperature. Here's an overview of each: ### Infrared Testing **Infrared (IR) testing** typically involves the use of infrared cameras or thermal imagers to capture images and data related to the thermal energy emitted by objects.
Interatomic Coulombic Decay (ICD) is a quantum phenomenon that occurs when two or more non-covalently bound atoms or molecules are in close proximity to one another and one of them becomes ionized or excited. This process leads to the transfer of energy from the excited or ionized atom to its neighboring atom through the Coulombic interaction of their charges. In simple terms, when one atom loses an electron (becomes ionized), it creates a positively charged ion.
Internet Explorer 10 (IE10) is a version of the Internet Explorer web browser developed by Microsoft. It was released alongside Windows 8 on October 26, 2012, and was later made available for Windows 7. IE10 introduced several features and improvements over its predecessor, IE9, including: 1. **Speed Enhancements**: IE10 offered better performance and faster page loading times through various optimizations.
The term "Internet in England" could refer to a couple of different things. Generally, it could encompass: 1. **Internet Access and Infrastructure**: This includes the availability of broadband and mobile internet services across England. The UK has a diverse range of internet service providers (ISPs) offering various plans, from fiber-optic to mobile data. The Digital Economy Act and other governmental initiatives aim to improve internet access, especially in rural areas.
The Iodine Satellite refers to a satellite developed by the company Iodine as part of its efforts to provide advanced satellite-based services. One significant application of the Iodine Satellite is in Earth observation and communication, particularly for broadband connectivity, remote sensing, and various other applications in space technology. Iodine has aimed to leverage small satellite technology and deploy a constellation of such satellites to enhance the accessibility and performance of satellite communication services.
Jump search is an efficient search algorithm for finding an element in a sorted array. It works by dividing the array into blocks and then performing a linear search within a block. The key idea is to reduce the number of comparisons compared to a simple linear search by "jumping" ahead by a fixed number of steps over the array instead of checking each element.
Lace cards are typically small, decorative cards made from lace or featuring lace-like designs. They can be used for various purposes, including greeting cards, invitations, or place cards at events such as weddings. The intricate designs and delicate appearance of lace cards add a touch of elegance and sophistication to any occasion.
The Extended Discrete Element Method (EDEM) is an advanced computational technique used primarily to simulate the behavior of granular materials, such as soil, rocks, or powders, as well as other discrete systems. It builds upon the traditional Discrete Element Method (DEM), which was developed to model and analyze the motion and interaction of individual particles.
A "block reflector" is a term that can refer to various contexts, but it is most commonly associated with optics, radio frequency applications, and information technology. Here are a few interpretations based on different fields: 1. **Optics**: In optical applications, a block reflector is usually a material or surface that reflects light. For example, it can refer to a solid piece of reflective material, often designed to redirect light in a specific manner, like a mirror.
The Land Use Evolution and Impact Assessment Model (LUEIAM) is a conceptual and computational framework used to analyze and project changes in land use over time, as well as to assess the environmental, social, and economic impacts of these changes.
The learning rate is a hyperparameter used in optimization algorithms, particularly in the context of machine learning and neural networks. It controls how much to change the model weights in response to the error or loss calculated during training. In more specific terms, the learning rate determines the size of the steps taken towards a minimum of the loss function during the training process.
Luca Turin is an acclaimed biophysicist and perfumer known for his research on the molecular basis of olfaction (the sense of smell). He has contributed significantly to the understanding of how odors are perceived at a molecular level. Turin is also recognized for his work in the fragrance industry and has authored several books and articles on scent, including “Perfume: The A-Z Guide,” which he co-authored with Tania Sanchez.

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