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関連する概念動画

Heat Flow and Specific Heat01:12

Heat Flow and Specific Heat

5.7K
Heat is a type of energy transfer that is caused by a temperature difference, and it can change the temperature of an object. Since heat is a form of energy, its SI unit is the joule (J). Another common unit of energy often used for heat is the calorie (cal), which is defined as the energy needed to change the temperature of 1 g of water by 1 °C, specifically between 14.5 °C and 15.5 °C, since the energy needed shows a slight temperature dependence. Another commonly used unit is...
5.7K
Heat Capacities of an Ideal Gas II01:23

Heat Capacities of an Ideal Gas II

2.6K
For a system that undergoes a thermodynamic process at a constant volume condition, the heat absorbed is used only to increase the system's internal energy and not for doing any kind of work. While for a system undergoing a thermodynamic process under a constant pressure condition, the amount of heat absorbed is used not only for increasing the internal energy (as a function of temperature) but also for doing some work. The molar heat capacity is the amount of heat required to increase the...
2.6K
Heat Capacities of an Ideal Gas I01:14

Heat Capacities of an Ideal Gas I

2.9K
Heat capacity is the ratio of heat absorbed by the substance corresponding to its temperature change. It is also called thermal capacity and the SI unit of heat capacity is J/K. Whereas, specific heat capacity is defined as the amount of heat necessary to change the temperature of 1 kg of a substance by 1 K and is also called massic heat capacity. Its SI unit is J/kg⋅K.
Molar heat capacity quantifies the ratio of the amount of heat added (or removed) to increase (or decrease) the...
2.9K
Mechanisms of Heat Transfer I01:14

Mechanisms of Heat Transfer I

4.6K
Just as interesting as the effects of heat transfer on a system are the methods by which the heat transfer occur. Whenever there is a temperature difference, heat transfer occurs. It may occur rapidly, such as through a cooking pan, or slowly, such as through the walls of a picnic ice box. So many processes involve heat transfer that it is hard to imagine a situation where no heat transfer occurs. Yet, every heat transfer takes place by only three methods: conduction, convection, and radiation.
4.6K
Mechanism of heat transfer01:19

Mechanism of heat transfer

1.4K
Understanding heat transfer mechanisms is essential for understanding how our bodies maintain balance in different environmental conditions. When the environment is thermoneutral, the body is in a state of balance, neither using nor releasing energy to maintain its core temperature. However, when the environment is not thermoneutral, the body employs four heat transfer mechanisms to maintain homeostasis: conduction, convection, evaporation, and radiation. These mechanisms facilitate heat...
1.4K
Heat Capacities of an Ideal Gas III01:25

Heat Capacities of an Ideal Gas III

2.3K
The number of independent ways a gas molecule can move along straight line, rotate, and vibrate is called its degrees of freedom. Supposing d represents the number of degrees of freedom of an ideal gas, the molar heat capacity at constant volume of an ideal gas in terms of d is
2.3K

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関連する実験動画

Updated: Sep 10, 2025

Characterization of Thermal Transport in One-dimensional Solid Materials
05:20

Characterization of Thermal Transport in One-dimensional Solid Materials

Published on: January 26, 2014

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熱拡散インヴァリアント

Liujun Xu1, Pengfei Zhuang2, Fubao Yang1

  • 1Graduate School of China Academy of Engineering Physics, Beijing 100193, China.

Physical review letters
|August 27, 2025
PubMed
まとめ

研究者は熱構造を分類するために熱拡散インヴァリアントを開発し,熱管理とメタマテリアルの設計におけるアプリケーションのために一時的な熱メタマテリアルの正確な設計を可能にしました.

さらに関連する動画

Experimental Methodology for Estimation of Local Heat Fluxes and Burning Rates in Steady Laminar Boundary Layer Diffusion Flames
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Experimental Methodology for Estimation of Local Heat Fluxes and Burning Rates in Steady Laminar Boundary Layer Diffusion Flames

Published on: June 1, 2016

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Author Spotlight: Simulation and Analysis of the Temperature Rise of Ring Main Unit Equipment
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Author Spotlight: Simulation and Analysis of the Temperature Rise of Ring Main Unit Equipment

Published on: July 5, 2024

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関連する実験動画

Last Updated: Sep 10, 2025

Characterization of Thermal Transport in One-dimensional Solid Materials
05:20

Characterization of Thermal Transport in One-dimensional Solid Materials

Published on: January 26, 2014

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Experimental Methodology for Estimation of Local Heat Fluxes and Burning Rates in Steady Laminar Boundary Layer Diffusion Flames
10:29

Experimental Methodology for Estimation of Local Heat Fluxes and Burning Rates in Steady Laminar Boundary Layer Diffusion Flames

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Author Spotlight: Simulation and Analysis of the Temperature Rise of Ring Main Unit Equipment
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Author Spotlight: Simulation and Analysis of the Temperature Rise of Ring Main Unit Equipment

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科学分野:

  • 物理学
  • 材料科学
  • 熱力学について

背景:

  • トポロジカル・インヴァリアントは,電子,光子,音声系における幾何学的特徴を分類するために確立されている.
  • 熱構造の機能的性質を分類するための統一された不変数は,現在欠けている.

研究 の 目的:

  • 熱構造のための新しい熱拡散インヴァリアントを策定する.
  • 熱的機能と拡散性の相関を確立する.
  • 先進的な熱メタマテリアルの設計を可能にします

主な方法:

  • 熱拡散インヴァリアントの配列
  • フリーフォームの一時的な熱マントを用いた実験的検証.
  • 熱コンベクションと放射線における応用探求

主要な成果:

  • 熱拡散インヴァリアントは,熱機能と拡散性を明示的に相関させる.
  • 多様な熱性メタマテリアルのための統一された枠組みが確立されています.
  • このインヴァリアントは,同otropic 熱伝導性を持つフリーフォームの一時的な熱メタマテリアルの設計を容易にする.

結論:

  • 熱拡散インヴァリアントは,熱メタマテリアルを設計するための新しいパラダイムを提供します.
  • このインヴァリアントは,熱隠蔽,イリュージョン,コンベクション,放射線に適用できます.
  • この発見は,熱管理と不均衡輸送の研究のための新しい道を開く.