Maxwell's thermodynamic surface is a conceptual representation in thermodynamics that illustrates the relationship between different thermodynamic variables, particularly entropy, volume, and energy. It is typically depicted as a multidimensional surface in a three-dimensional space where the axes represent entropy (S), volume (V), and internal energy (U). The surface provides a visual framework to understand how changes in one variable can affect the others and helps to derive relationships between different thermodynamic properties.
Melting by Wikipedia Bot 0
Melting is the process by which a solid substance transforms into a liquid when it is heated to its melting point. This transformation occurs because the added heat energy increases the vibrations of the molecules in the solid, causing them to break free from their fixed positions in the solid structure. Melting can be observed in various substances, such as ice melting into water or metal melting to become molten metal. The temperature at which melting occurs is specific to each material and is known as the melting point.
Eddie Dekel by Wikipedia Bot 0
Eddie Dekel is a prominent figure in the field of game theory and economics. He is known for his contributions to various areas, including mechanism design, auction theory, and other topics related to mathematical economics. Dekel has served as a professor at institutions such as Tel Aviv University and has published numerous papers and articles on these subjects.
Mie potential by Wikipedia Bot 0
The Mie potential is a type of interatomic potential used in molecular dynamics and statistical mechanics to describe the interaction between pairs of particles, typically atoms or molecules. It is a generalized form of the Lennard-Jones potential and is characterized by its ability to represent a wide range of interactions through adjustable parameters.
The Morse potential, also known as the Morse/Long-range potential, is a mathematical model used to describe the interaction between two atoms or molecules, particularly in the context of diatomic molecules. It provides a more accurate representation of the potential energy of a molecular bond than simpler potentials, such as the harmonic oscillator model.
Thermal transmittance, often represented by the symbol \( U \), is a measure of how well a building element (such as walls, roofs, windows, or doors) can conduct heat. It quantifies the rate of heat transfer through a unit area of the building element for a temperature difference of one degree (typically measured in watts per square meter per degree Kelvin, W/m²·K or W/m²·°C).
Jean Ville by Wikipedia Bot 0
Jean Ville does not refer to a well-known concept or entity, and it may be a typo or an incorrect combination of words. If you meant "Jean Valjean," that is a principal character from Victor Hugo's novel "Les Misérables.
In statistical mechanics, the multiplicity function (also referred to as the multiplicity or the number of microstates) describes the number of ways in which a given macrostate can be realized with specific values of macroscopic parameters (such as energy, number of particles, etc.).
Quantum heat engines and refrigerators are devices that operate on the principles of quantum mechanics to convert thermal energy into work or to transfer heat from one body to another, respectively. They seek to exploit quantum phenomena to improve efficiency or performance beyond classical limits. Here’s an overview of both concepts: ### Quantum Heat Engines A **quantum heat engine** is a theoretical model that operates on quantum mechanical principles to convert heat energy into mechanical work.
Radiative cooling by Wikipedia Bot 0
Radiative cooling is a natural process by which an object loses heat by emitting infrared radiation. This occurs when the surface of the object absorbs heat from its surroundings or the sun and then emits that energy in the form of thermal radiation. The efficiency of radiative cooling depends on several factors, including the temperature of the object, the ambient temperature, and the object's ability to emit infrared radiation.
Regelation by Wikipedia Bot 0
Regelation is a physical process that occurs when ice melts under pressure and subsequently refreezes when the pressure is released. This phenomenon is most commonly observed in environments such as glaciers or ice skating, where the pressure exerted by a blade or an object temporarily lowers the melting point of the ice. When pressure is applied to ice, it can cause some of the ice to turn into liquid water, creating a thin layer of water.
Passive daytime radiative cooling is a technology and concept aimed at achieving cooling effects without the need for energy-intensive active cooling systems like air conditioning. This approach leverages the natural process of thermal radiation to cool surfaces and environments. Here's how it works: 1. **Thermal Radiation**: All objects emit thermal radiation based on their temperature. At daytime, surfaces absorb solar radiation, leading to an increase in temperature. However, they can also radiate infrared heat energy into the sky.
A pressure-volume (P-V) diagram is a graphical representation used in thermodynamics to illustrate the relationship between the pressure (P) and volume (V) of a system, typically a gas, during various processes. The diagram provides insights into the behavior of gases during expansion, compression, and phase changes. ### Key Features of a P-V Diagram: 1. **Axes**: - The horizontal axis (x-axis) represents volume (V), often in liters or cubic meters.
Prigogine's theorem refers to ideas and principles derived from the work of Belgian physicist Ilya Prigogine, who was awarded the Nobel Prize in Chemistry in 1977 for his contributions to the understanding of non-equilibrium thermodynamics. While the term "Prigogine's theorem" doesn't refer to a specific theorem in the traditional sense, Prigogine's work encompasses important concepts related to systems far from equilibrium, self-organization, and dissipative structures.
Primary energy by Wikipedia Bot 0
Primary energy refers to energy that is available in its natural form and has not yet been subjected to any conversion or transformation processes. This type of energy is found in nature and can be harnessed for use in various applications, such as electricity generation, heating, or transportation. Examples of primary energy sources include: - **Fossil Fuels**: Coal, oil, and natural gas, which are formed from the remains of ancient organisms.
The Principle of Minimum Energy, also known as the Principle of Least Action, is a fundamental concept in physics and engineering. It states that a system will naturally evolve toward a state that minimizes its total energy, subject to any constraints. This principle can be applied in various disciplines, including mechanics, thermodynamics, and electromagnetism. In mechanical systems, for example, the principle suggests that the configuration of a mechanical system will settle into a position that requires the least amount of potential and kinetic energy.
Synergetics is a framework developed by the German physicist Hermann Haken in the 1970s. It is a multidisciplinary approach that studies complex systems and the principles of self-organization, pattern formation, and collective behavior. Haken's work in synergetics combines ideas from physics, biology, psychology, and social sciences to understand how coherent structures and patterns emerge in systems made up of many interacting components.
A TemperatureEntropy (T-s) diagram is a graphical representation used in thermodynamics to illustrate the relationship between temperature (T) and entropy (s) of a system. It is particularly useful for analyzing thermodynamic processes and cycles, especially for various fluids, such as steam in power plants and refrigerants in refrigeration systems.
Thermal diode by Wikipedia Bot 0
A thermal diode is a device that allows heat to flow in one direction more easily than in the opposite direction, analogous to how an electrical diode allows current to flow in one direction while blocking it in the other. Thermal diodes are used in various applications where temperature differences need to be managed. Here are some key points regarding thermal diodes: 1. **Functionality**: Thermal diodes exploit materials with varying thermal conductivities or thermal properties.
Regular solution by Wikipedia Bot 0
A regular solution is a concept in thermodynamics and materials science that describes a mixture of two or more components that behave ideally at certain conditions. In a regular solution, the interactions between like molecules (molecules of the same species) and unlike molecules (molecules of different species) are taken into account. The model helps in understanding the thermodynamic properties of liquid mixtures, particularly in solutions where deviations from ideal behavior may occur due to differences in size, shape, and energies of the interacting species.

Pinned article: ourbigbook/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 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.
  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