physical constant

简明释义

物理常数

英英释义

例句

1.Knowing the value of the universal gas constant is essential for calculations involving gases, as it is a vital physical constant 物理常数.

了解普适气体常数的数值对涉及气体的计算至关重要，因为它是一个重要的物理常数 物理常数。

2.The speed of light is a fundamental physical constant 物理常数 that plays a crucial role in the theory of relativity.

光速是一个基本的物理常数 物理常数，在相对论中起着至关重要的作用。

3.The fine-structure constant is a dimensionless physical constant 物理常数 that characterizes the strength of electromagnetic interactions.

细结构常数是一个无量纲的物理常数 物理常数，用于表征电磁相互作用的强度。

4.In physics, the gravitational constant is a key physical constant 物理常数 that describes the strength of gravity.

在物理学中，万有引力常数是描述重力强度的关键物理常数 物理常数。

5.Planck's constant is another important physical constant 物理常数 used in quantum mechanics.

普朗克常数是量子力学中另一个重要的物理常数 物理常数。

作文

In the realm of physics, the concept of a physical constant is fundamental to our understanding of the universe. A physical constant, defined as a quantity with a fixed value that does not change under varying conditions, plays a crucial role in various scientific equations and theories. For instance, one of the most famous physical constants is the speed of light in a vacuum, denoted by the symbol 'c', which is approximately 299,792,458 meters per second. This physical constant is not only pivotal in the field of optics but also serves as a cornerstone in the theory of relativity proposed by Albert Einstein.Another notable example is the gravitational constant, represented by the letter 'G'. The value of 'G' is approximately 6.674 × 10⁻¹¹ N(m/kg)², and it describes the strength of the gravitational force between two masses. This physical constant is essential for calculating gravitational forces in physics and is used in various applications, from predicting the orbits of planets to understanding the behavior of black holes.Furthermore, the Planck constant, denoted as 'h', is another critical physical constant that relates the energy of a photon to its frequency. With a value of approximately 6.626 × 10⁻³⁴ Js, the Planck constant is fundamental in quantum mechanics, influencing how we understand atomic and subatomic processes. The existence of these physical constants highlights the inherent order and predictability within the natural world.Understanding physical constants is not just an academic exercise; it has practical implications in technology and engineering. For example, the precise measurement of the speed of light has led to advancements in telecommunications, including fiber optics and satellite communications. Similarly, knowledge of the gravitational constant has enabled engineers to design structures that can withstand gravitational forces, ensuring safety and stability.In addition to their practical applications, physical constants also inspire philosophical inquiries into the nature of reality. Why do these constants take the values they do? Could they have been different? These questions lead to discussions about the fine-tuning of the universe and the fundamental laws that govern it. The search for a deeper understanding of physical constants continues to be a significant area of research in theoretical physics, as scientists strive to unify the various forces of nature under a single framework.In conclusion, physical constants are not merely numbers; they represent the underlying principles that govern the universe. Their fixed values provide a foundation for scientific inquiry and technological advancement. As we continue to explore the mysteries of the cosmos, the significance of physical constants will undoubtedly grow, guiding us toward a more profound understanding of the world around us. The study of these constants not only enriches our knowledge of physics but also deepens our appreciation for the intricate tapestry of the universe.

在物理学领域，物理常数的概念对于我们理解宇宙至关重要。物理常数被定义为在不同条件下值不变的量，它在各种科学方程和理论中起着关键作用。例如，最著名的物理常数之一是真空中的光速，用字母“c”表示，约为299,792,458米每秒。这一物理常数不仅在光学领域至关重要，而且在阿尔伯特·爱因斯坦提出的相对论中也作为基石。另一个显著的例子是引力常数，用字母“G”表示。‘G’的值约为6.674 × 10⁻¹¹ N(m/kg)²，它描述了两个质量之间的引力强度。这一物理常数对于计算物理中的引力非常重要，并且在许多应用中使用，从预测行星轨道到理解黑洞的行为。此外，普朗克常数，用'h'表示，是另一个关键的物理常数，它将光子的能量与其频率联系起来。普朗克常数的值约为6.626 × 10⁻³⁴ Js，在量子力学中具有基础性影响，影响我们对原子和亚原子过程的理解。这些物理常数的存在突显了自然界内在的秩序和可预测性。理解物理常数不仅仅是学术上的练习；它在技术和工程中具有实际意义。例如，光速的精确测量促进了电信领域的进步，包括光纤和卫星通信。类似地，引力常数的知识使工程师能够设计能够承受引力的结构，确保安全和稳定。除了它们的实际应用，物理常数还激发了对现实本质的哲学探讨。为什么这些常数会取这样的值？它们可能会有所不同吗？这些问题引发了关于宇宙微调和支配宇宙的基本法则的讨论。对物理常数更深层次理解的探索仍然是理论物理学中的一个重要研究领域，科学家们努力在单一框架下统一自然的各种力量。总之，物理常数不仅仅是数字；它们代表了支配宇宙的基本原则。它们的固定值为科学探究和技术进步提供了基础。随着我们继续探索宇宙的奥秘，物理常数的重要性无疑将不断增长，引导我们更深入地理解周围的世界。对这些常数的研究不仅丰富了我们对物理学的知识，也加深了我们对宇宙复杂织锦的欣赏。