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Charged particles are measured by bending these particles in a circle by a magnetic field.
https://openstax.org/books/university-physics-volume-3/pages/11-summary
Particles are measured using calorimeters that absorb the particles.
https://openstax.org/books/university-physics-volume-3/pages/11-summary
The Standard Model describes interactions between particles through the strong nuclear, electromagnetic, and weak nuclear forces.
https://openstax.org/books/university-physics-volume-3/pages/11-summary
Particle interactions are represented by Feynman diagrams. A Feynman diagram represents interactions between particles on a space-time graph.
https://openstax.org/books/university-physics-volume-3/pages/11-summary
Electromagnetic forces act over a long range, but strong and weak forces act over a short range. These forces are transmitted between particles by sending and receiving bosons.
https://openstax.org/books/university-physics-volume-3/pages/11-summary
Grand unified theories seek an understanding of the universe in terms of just one force.
https://openstax.org/books/university-physics-volume-3/pages/11-summary
The universe is expanding like a balloon—every point is receding from every other point.
https://openstax.org/books/university-physics-volume-3/pages/11-summary
Distant galaxies move away from us at a velocity proportional to its distance. This rate is measured to be approximately 70 km/s/Mpc. Thus, the farther galaxies are from us, the greater their speeds. These “recessional velocities” can be measure using the Doppler shift of light.
https://openstax.org/books/university-physics-volume-3/pages/11-summary
According to current cosmological models, the universe began with the Big Bang approximately 13.7 billion years ago.
https://openstax.org/books/university-physics-volume-3/pages/11-summary
The early universe was hot and dense.
https://openstax.org/books/university-physics-volume-3/pages/11-summary
The universe is isotropic and expanding.
https://openstax.org/books/university-physics-volume-3/pages/11-summary
Cosmic background radiation is evidence for the Big Bang.
https://openstax.org/books/university-physics-volume-3/pages/11-summary
The vast portion of the mass and energy of the universe is not well understood.
https://openstax.org/books/university-physics-volume-3/pages/11-summary
adversarial attack : sample input (e.g., an image) that is designed to cause a system to behave problematically
https://openstax.org/books/introduction-computer-science/pages/1-key-terms
algorithm : sequence of precise instructions
https://openstax.org/books/introduction-computer-science/pages/1-key-terms
artificial intelligence (AI) : development of computer functions to perform tasks, such as visual perception and decision-making processes, that usually are performed by human intelligence
https://openstax.org/books/introduction-computer-science/pages/1-key-terms
big data : very large datasets that aren’t easily processed using spreadsheets
https://openstax.org/books/introduction-computer-science/pages/1-key-terms
computational science : application of computing concepts and technologies to advance scientific research and practical applications of science knowledge
https://openstax.org/books/introduction-computer-science/pages/1-key-terms
computer program : algorithms that can be run on a computer
https://openstax.org/books/introduction-computer-science/pages/1-key-terms
computer science (CS) : study of the phenomena surrounding computers
https://openstax.org/books/introduction-computer-science/pages/1-key-terms
computing : all phenomena related to computers
https://openstax.org/books/introduction-computer-science/pages/1-key-terms
data science : interdisciplinary field that applies computing toward managing data and extracting information from data
https://openstax.org/books/introduction-computer-science/pages/1-key-terms
hardware : physical, real-world materials that enable computation
https://openstax.org/books/introduction-computer-science/pages/1-key-terms
human-computer interaction (HCI) : subfield of computer science that emphasizes the social aspects of computation
https://openstax.org/books/introduction-computer-science/pages/1-key-terms
image recognition : problem of identifying objects in an image
https://openstax.org/books/introduction-computer-science/pages/1-key-terms
information science : interdisciplinary field studying information technologies and systems as they relate to people, organizations, and societies
https://openstax.org/books/introduction-computer-science/pages/1-key-terms
memory : means of addressing information in a computer by storing it in consistent locations
https://openstax.org/books/introduction-computer-science/pages/1-key-terms
network : various technological devices that are connected and share information
https://openstax.org/books/introduction-computer-science/pages/1-key-terms
neural network : AI algorithm architecture that emphasizes connections between artificial “neurons” whose behavior and values change in response to stimulus or input
https://openstax.org/books/introduction-computer-science/pages/1-key-terms
processor : computer’s “brain,” that follows instructions from algorithms and processes data
https://openstax.org/books/introduction-computer-science/pages/1-key-terms
programming language : language consisting of symbols and instructions that can be interpreted by a computer
https://openstax.org/books/introduction-computer-science/pages/1-key-terms
social determination of technology : belief that technologies are inherently neutral, and that it is the people who use a technology who ultimately make it “good” or “bad”
https://openstax.org/books/introduction-computer-science/pages/1-key-terms
software : algorithmic principles that determine how results are computed
https://openstax.org/books/introduction-computer-science/pages/1-key-terms
software engineering : subfield of computer science that emphasizes how problems can be solved with computers as well as the practices and processes that can help people design more effective software solutions
https://openstax.org/books/introduction-computer-science/pages/1-key-terms
spreadsheet : data-centric programming environment where data is organized into cells in a table
https://openstax.org/books/introduction-computer-science/pages/1-key-terms
storage : hardware and physical components of a computer that permanently house a computer’s data
https://openstax.org/books/introduction-computer-science/pages/1-key-terms
technological fix : idea that technologies can solve social problems, but now often used to critique blind faith in technological solutions to human problems
https://openstax.org/books/introduction-computer-science/pages/1-key-terms
theoretical computer science : mathematical processes behind software
https://openstax.org/books/introduction-computer-science/pages/1-key-terms
Turing-complete : fundamental model for computing results and every computer has the ability to run any algorithm
https://openstax.org/books/introduction-computer-science/pages/1-key-terms
vacuum tube : physical device that works like a light bulb used as memory in early digital computers
https://openstax.org/books/introduction-computer-science/pages/1-key-terms
Computer science is pervasive in our daily lives, business and industry, scientific research and development, and social change.
https://openstax.org/books/introduction-computer-science/pages/1-summary
Computer science (CS) is the study of computing, which includes all phenomena related to computers, such as the Internet. With foundations in engineering and mathematics, computer science focuses on studying algorithms, which are instructions that enable computing. This includes computer hardware and software and the w...
https://openstax.org/books/introduction-computer-science/pages/1-summary
People have used computer science to advance many more diverse goals beyond making war or making money. Computing was imagined as: a new medium for helping people learn everything; a new technology that could enable anti-racism; a means of enabling global development for peoples across the world. Yet these visions and ...
https://openstax.org/books/introduction-computer-science/pages/1-summary
By contributing tools and resources to handle tasks and improve operations, computer science enables many other fields and areas of research or development.
https://openstax.org/books/introduction-computer-science/pages/1-summary
Data science is an interdisciplinary field that applies computing to managing data and extracting information from data. Many millions of people engage in data science work by using spreadsheets. Still, data science also often emphasizes larger-scale problems involving big data that are hard to manage using spreadsheet...
https://openstax.org/books/introduction-computer-science/pages/1-summary
Computational science refers to applying computing concepts and technologies to advance scientific research and practical applications of science knowledge. Computer science’s emphasis on creating things can help other sciences by, for example, contributing new models or simulations that can enable the discovery of n...
https://openstax.org/books/introduction-computer-science/pages/1-summary
Information science is an interdisciplinary field studying information technologies and systems as they relate to people, organizations, and societies. As computing is now so central to information management and information exchange, information science has significant overlap with computer science. Still, it tends to...
https://openstax.org/books/introduction-computer-science/pages/1-summary
Today, computer science is an interdisciplinary field that contributes to all other fields. Effective computational solutions to research or business problems require combining domain-specific knowledge with computer science concepts from a combination of areas.
https://openstax.org/books/introduction-computer-science/pages/1-summary
Computer science is shaping the future of society. There are three ways in which computer science can shape the future of society: developing foundational technologies, evaluating negative consequences of technologies, and designing technologies for social good.
https://openstax.org/books/introduction-computer-science/pages/1-summary
As one example of developing foundational technologies, computer science’s rapid development of artificial intelligence technologies (and the current trend around neural networks) has enabled many new applications like image recognition. These developments often do not occur in isolation: the popular use of neural ne...
https://openstax.org/books/introduction-computer-science/pages/1-summary
As one example of evaluating negative consequences, computer science considers the philosophical and practical limitations of neural networks. Research into adversarial attacks can enable computer scientists to develop more robust neural networks that are safer and more effective.
https://openstax.org/books/introduction-computer-science/pages/1-summary
As one example of designing technologies for social good, computer science contributes to the research, development, mass production, delivery, and logistics of modern medicine from beginning to end. Yet applications for social good are often embedded in broader social and political dynamics that computer science has d...
https://openstax.org/books/introduction-computer-science/pages/1-summary
abstraction : simplified representation of complex systems or phenomena
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
application architecture : subset of the enterprise solution architecture; includes a process to architect and design the application architecture as well as the actual application architecture model, which represents the content of the application architecture
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
architectural pattern : reusable solution to a recurring problem in software architecture design
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
architecture model : represents the content of the application architecture
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
architecture scope : extent and boundaries within which architectural considerations, decisions, and solutions apply
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
automation : using a program or computer application to perform repetitive tasks or calculations
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
big data analytics : process of examining, processing, and extracting valuable insights from large datasets
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
blockchain : secure and transparent way of recording transactions; uses a chain of blocks, each storing a list of transactions
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
blueprint : detailed plan or design that outlines the structure, components, and specifications of a building, product, system, or process
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
business logic layer : holds the business logic for the business solution or application
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
business model : framework that outlines how a business creates, delivers, and captures value
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
business process hierarchy : organizes a company’s activities from broad, general processes down to specific tasks, making it easier to manage and improve how the business operates
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
computational thinking : problem-solving and cognitive process rooted in principles derived from computer science that involves breaking down complex problems into smaller, more manageable parts and devising systematic approaches to solve them
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
data architecture model : conceptual framework that outlines how an organization structures, organizes, and manages its data assets
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
data management layer : responsible for interacting with persistent storage systems like databases and various data processing mechanisms
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
data modeling : collaborative process wherein IT and business stakeholders establish a shared understanding of essential business terms, known as entities, which typically end up being represented as tables that contain data in a relational database management system
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
debugging : finding and fixing of issues in code
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
decomposition : solving of a complex problem by breaking it up into smaller, more manageable tasks
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
design component : reusable element within a larger system that serves a specific purpose
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
EA domain : represents business, data, application, and technology architectures
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
elementary business process (EBP) : fundamental and indivisible activity within a business that is not further subdivided into smaller processes
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
entity model : represents the various objects or concepts and their relationships within a system
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
Ethereum platform : open-source blockchain platform that enables the creation and execution of smart contracts and decentralized applications
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
flowchart : method for showing the flow and direction of decisions in a visual way using a diagram
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
function : set of commands that can be repeatedly executed
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
heuristic : form of a pattern that is well-known and considered a rule of thumb
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
hybrid cloud application : combines the benefits of both private and public clouds, allowing organizations to optimize their infrastructure based on specific requirements
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
Internet of Things (IoT) : network of physical devices embedded with sensors, software, and connectivity, enabling them to collect and exchange data
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
machine learning : developing algorithms that enable computers to learn from data and make decisions without programming
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
microservices : way of building software by breaking it into small, independent pieces; each piece, or service, does a specific job and works on its own
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
Microsoft Azure : comprehensive cloud computing platform provided by Microsoft
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
migrating legacy business solutions : upgrading or replacing old systems with newer, more efficient ones
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
Model-View-Controller (MVC) : software architectural pattern commonly used in the design of interactive applications, providing a systematic way to organize and structure code
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
monolithic structure : system or application architecture where all the components are tightly integrated into a single unit
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
presentation layer : user’s touchpoint, handling the user interface (UI) and delivering the user experience (UX), which encapsulates the overall feel and interaction a person has with a system or service
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
process map : displays the order of chosen processes from the process hierarchies, highlighting their connection to the roles responsible for executing them
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
pseudocode : outline of the logic of algorithms using a combination of language and high-level programming concepts
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
recursion : programming and mathematical concept where a function calls itself during its execution
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
smart contract : automated agreement written in code that runs on blockchain technology
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
solution architecture : structural design that is meant to address the needs of prospective solution users
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
solutions continuum : strategy where existing solutions, components, or patterns are leveraged and adapted for use in different contexts
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
system architecture : deals with application and data, and how they are related to each other and what business process they support together
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
technical architecture : includes the software and hardware capabilities to fully enable application and data services
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
user experience (UX) : overall experience that a person has when interacting with a product, service, or system
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
Web 2.0 : second generation of the World Wide Web when we shift from static web pages to dynamic content
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
Web 3.0 : third generation of the World Wide Web and represents a vision for the future of the Internet characterized by advanced technologies
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
web application (web app) : software application that is accessed and interacted with through a web browser over the Internet
https://openstax.org/books/introduction-computer-science/pages/2-key-terms
web application framework : built-in support for architectural patterns that make it easy to extend the framework and use plug-ins to implement commercial-grade websites in a reasonable amount of time
https://openstax.org/books/introduction-computer-science/pages/2-key-terms