planck's constant

简明释义

普朗克常数

英英释义

例句

1.The equation E = hν uses planck's constant (普朗克常数) to relate energy and frequency.

方程E = hν使用普朗克常数来关联能量和频率。

2.In quantum mechanics, the value of planck's constant (普朗克常数) is crucial for calculating energy levels.

在量子力学中，普朗克常数的值对于计算能量级至关重要。

3.The value of planck's constant (普朗克常数) is approximately 6.626 x 10^-34 J·s.

普朗克常数的值大约为6.626 x 10^-34 J·s。

4.To calculate the momentum of a photon, one must use planck's constant (普朗克常数).

要计算光子的动量，必须使用普朗克常数。

5.Scientists often refer to planck's constant (普朗克常数) when discussing the quantization of light.

科学家在讨论光的量子化时经常提到普朗克常数。

作文

In the realm of physics, few concepts have had as profound an impact on our understanding of the universe as Planck's constant. This fundamental constant, denoted by the symbol 'h', plays a crucial role in quantum mechanics, serving as a bridge between the macroscopic and microscopic worlds. To grasp the significance of Planck's constant, one must first explore its origins and implications in the field of science.The history of Planck's constant dates back to the early 20th century, when physicist Max Planck introduced it in his work on black-body radiation. At that time, classical physics struggled to explain the behavior of electromagnetic radiation emitted by heated objects. Planck proposed that energy is quantized, meaning it can only exist in discrete amounts or 'quanta'. This revolutionary idea led to the formulation of Planck's constant, which quantifies the size of these energy packets.The value of Planck's constant is approximately 6.62607015 × 10^-34 joule-seconds. This incredibly small number highlights the scale at which quantum effects become significant. For instance, when examining subatomic particles like electrons, the effects of Planck's constant are paramount, influencing their behavior and interactions. Without this constant, the principles of quantum mechanics would not hold, and our understanding of atomic and molecular structures would be fundamentally flawed.One of the most intriguing aspects of Planck's constant is its role in the famous equation E=hf, where 'E' represents energy, 'h' is Planck's constant, and 'f' denotes frequency. This relationship illustrates how energy is directly proportional to the frequency of electromagnetic waves. As a result, higher frequency waves, such as gamma rays, carry more energy than lower frequency waves, like radio waves. This principle has far-reaching implications, from the development of lasers to the understanding of the photoelectric effect, which ultimately paved the way for the invention of modern electronics.Moreover, Planck's constant is not only pivotal in theoretical physics but also has practical applications in various technologies. For instance, it is essential in the functioning of semiconductors and quantum computers. As scientists continue to delve deeper into the quantum realm, the importance of Planck's constant will only grow, potentially leading to new discoveries that could revolutionize technology and our understanding of the universe.In conclusion, Planck's constant stands as a cornerstone of modern physics, encapsulating the essence of quantum theory. Its introduction marked a paradigm shift in how we perceive energy and matter, allowing us to unlock the mysteries of the atomic world. As we continue to explore the depths of quantum mechanics, Planck's constant will undoubtedly remain a key player in our quest for knowledge. By understanding and appreciating this fundamental constant, we gain insight into the very fabric of reality, bridging the gap between the known and the unknown, and ultimately enhancing our comprehension of the universe we inhabit.

普朗克常数在物理学领域中，少有的概念对我们理解宇宙产生如此深远的影响。这个基本常数用符号'h'表示，在量子力学中发挥着至关重要的作用，成为宏观世界与微观世界之间的桥梁。要理解普朗克常数的重要性，首先必须探讨它在科学领域中的起源和意义。普朗克常数的历史可以追溯到20世纪初，当时物理学家马克斯·普朗克在对黑体辐射的研究中引入了这一概念。在那个时候，经典物理学难以解释加热物体发出的电磁辐射的行为。普朗克提出能量是量化的，这意味着它只能以离散的量或“量子”存在。这一革命性的想法导致了普朗克常数的形成，它量化了这些能量包的大小。普朗克常数的值约为6.62607015 × 10^-34焦耳·秒。这个极小的数字突显了量子效应变得显著的尺度。例如，在研究电子等亚原子粒子时，普朗克常数的影响至关重要，影响着它们的行为和相互作用。如果没有这个常数，量子力学的原则将不成立，我们对原子和分子结构的理解将根本上是错误的。普朗克常数最引人注目的方面之一是它在著名方程E=hf中的作用，其中'E'代表能量，'h'是普朗克常数，而'f'表示频率。这个关系说明了能量与电磁波频率之间的直接比例关系。因此，频率更高的波（如伽马射线）携带的能量比频率较低的波（如无线电波）更大。这一原理具有深远的意义，从激光的发展到光电效应的理解，最终为现代电子的发明铺平了道路。此外，普朗克常数不仅在理论物理学中至关重要，而且在各种技术中具有实际应用。例如，它在半导体和量子计算机的功能中是必不可少的。随着科学家们继续深入探索量子领域，普朗克常数的重要性只会增加，可能导致新的发现，从而彻底改变技术和我们对宇宙的理解。总之，普朗克常数作为现代物理学的基石，概括了量子理论的本质。它的引入标志着我们对能量和物质的看法发生了范式转变，使我们能够揭开原子世界的奥秘。随着我们继续探索量子力学的深度，普朗克常数无疑将继续在我们追求知识的过程中扮演关键角色。通过理解和欣赏这个基本常数，我们获得了对现实本质的洞察，弥合了已知与未知之间的鸿沟，最终增强了我们对所居住宇宙的理解。