Latent internal energy refers to the energy stored within a substance that is associated with changes in its phase or state, such as during melting, freezing, vaporization, or condensation. This type of energy is not immediately observable as a change in temperature since it is involved in breaking or forming intermolecular bonds rather than increasing the kinetic energy of the particles.
Thermodynamic activity is a measure of the "effective concentration" of a species in a solution, taking into account interactions between particles. It provides a way to understand how the presence of other components in a mixture influences the behavior of a specific component compared to an ideal situation, where components behave independently. In ideal solutions, the activity (\(a\)) of a species is equal to its molar concentration (\(C\)).
The Volume Correction Factor (VCF) is a coefficient used to adjust the volume of a substance, often liquids, to account for changes in temperature and pressure. The volume of liquids can change significantly with variations in temperature, and since many measurements (like those in the oil and gas industries) require accurate volume readings for billing and inventory purposes, it's essential to correct for these variations.
Johannes Diderik van der Waals (1837–1923) was a Dutch physicist and thermodynamicist best known for his work on the behavior of gases and liquids. He is particularly renowned for formulating the van der Waals equation of state, which describes how real gases deviate from the ideal gas law by incorporating the effects of molecular attraction and the volume occupied by gas molecules.
The term "mixed or dual cycle" generally refers to a type of thermodynamic cycle used in engines and power generation systems that combines two or more different thermodynamic cycles to improve efficiency and performance. ### Key Examples of Mixed/Dual Cycles: 1. **Dual Cycle Engine**: - The dual cycle (or mixed cycle) is used in some internal combustion engines and is a combination of the Otto cycle (which describes gasoline engines) and the Diesel cycle.
A CT scan, or Computed Tomography scan, is a medical imaging technique that uses X-rays and advanced computer algorithms to create detailed cross-sectional images of the body. It provides more detailed information than regular X-ray imaging by combining multiple X-ray images taken from different angles to produce a three-dimensional representation of the inside of the body.
Richard Mollier (1863–1935) was a notable German engineer and physicist, best known for his contributions to the field of thermodynamics, particularly in the study of psychrometrics and the behavior of moist air. He developed the "Mollier diagram," also known as the enthalpy-entropy diagram, which graphically represents the relationships between various thermodynamic properties of moist air, such as temperature, humidity, enthalpy, and entropy.
Werner Kuhn (born July 29, 1910 – died July 29, 1994) was a German chemist known for his contributions to physical chemistry, particularly in the areas of molecular theory and polymer science. He played a significant role in developments related to the understanding of polymers and their properties. One of Kuhn's notable contributions was the Kuhn length concept, which provides a measure of the size of a segment of a polymer chain that behaves independently of other segments.
Thermal stability refers to the ability of a substance or material to maintain its physical and chemical properties at elevated temperatures. It is an important characteristic in various fields, including materials science, chemistry, and engineering, as it determines how a material behaves when exposed to heat. Key aspects of thermal stability include: 1. **Decomposition**: Many compounds will break down or decompose when exposed to high temperatures. A material with high thermal stability will not decompose until it reaches the decomposition temperature.
**Thermodynamics** is the branch of physics that deals with the relationships between heat, work, temperature, and energy. It provides a macroscopic perspective on physical systems and allows us to understand how energy is transformed from one form to another and how these transformations affect matter. The fundamental principles of thermodynamics are encapsulated in four laws: 1. **Zeroth Law of Thermodynamics**: Defines thermal equilibrium and establishes temperature as a measurable property.
Conformational entropy is a concept from thermodynamics and statistical mechanics that refers to the number of different ways a molecule can arrange itself in space while maintaining its overall structure. It is a key component of the free energy of a system and plays a significant role in determining the stability and reactivity of molecular systems. In more technical terms, conformational entropy quantifies the diversity of conformations (the various spatial arrangements of atoms in a molecule) available to a given molecular system.
Enthalpy of atomization, also known as the enthalpy of atomization of a substance, is the amount of energy required to break a substance into its individual gaseous atoms. It is a measure of the strength of the bonds holding the atoms together in a molecule or compound. Essentially, it represents the energy needed to convert one mole of a substance into its constituent atoms in the gas phase.
The term "high-efficiency hybrid cycle" generally refers to advanced thermal cycles used in power generation systems, particularly in the context of power plants or engines that combine different thermodynamic cycles or technologies to achieve higher efficiency compared to traditional systems. Here are some key points that characterize high-efficiency hybrid cycles: 1. **Combination of Technologies**: High-efficiency hybrid cycles often combine two or more different technologies, such as gas turbines, steam turbines, and renewable energy sources.
Heterothermy refers to a physiological condition in which an organism exhibits variability in its body temperature. Unlike homeothermic animals, which maintain a relatively constant body temperature regardless of environmental conditions (like mammals and birds), heterothermic animals can adjust their body temperature to match their surroundings at different times.
Carbon film technology refers to the use of carbon-based materials, often in thin film form, for various applications in electronics, optics, and materials science. The carbon film itself can be composed of different allotropes or forms of carbon, such as graphene, carbon nanotubes, or amorphous carbon. These films can exhibit unique properties, including high electrical conductivity, thermal conductivity, and mechanical strength.
Kleptothermy is a behavioral adaptation observed in certain animal species, where individuals steal heat from other animals to regulate their body temperature. This phenomenon typically occurs in cold environments where maintaining warmth is crucial for survival. Animals that exhibit kleptothermy might huddle together or share burrows, allowing them to benefit from the heat generated by their companions. By relying on the body heat of other individuals instead of generating their own, these animals can conserve energy and reduce their metabolic demands.
"Blacksmith Scene" is a short film created in 1893 by the Thomas Edison Company. It is one of the earliest examples of a motion picture, and it is notable for its portrayal of a blacksmith and his assistant working in a forge. The film captures the process of blacksmithing, showing the blacksmith hammering iron and engaging in various activities associated with the craft.
Hyperthermia is a medical condition characterized by an abnormally high body temperature resulting from the body's inability to dissipate heat effectively. It occurs when the body absorbs or generates more heat than it can lose, leading to a rise in core temperature. This can happen due to various factors, including prolonged exposure to high environmental temperatures, excessive physical exertion, dehydration, or certain medical 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 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. - 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





