atomic model

简明释义

原子模型

英英释义

例句

1.The development of the quantum atomic model 原子模型 changed our understanding of electron behavior.

量子原子模型 原子模型的发展改变了我们对电子行为的理解。

2.In high school science classes, students learn about the atomic model 原子模型 to understand the structure of matter.

在高中科学课程中，学生学习原子模型 原子模型以理解物质的结构。

3.The atomic model 原子模型 has evolved significantly since its inception in the early 19th century.

自19世纪初以来，原子模型 原子模型经历了显著的发展。

4.The atomic model 原子模型 proposed by Dalton laid the foundation for modern chemistry.

道尔顿提出的原子模型 原子模型为现代化学奠定了基础。

5.Scientists often refer to the Bohr atomic model 原子模型 when explaining energy levels in atoms.

科学家在解释原子中的能级时，常常提到波尔原子模型 原子模型。

作文

The concept of the atomic model has evolved significantly over the centuries, shaping our understanding of matter and the universe. At its core, the atomic model seeks to explain the structure of atoms, which are the fundamental building blocks of all matter. The journey of developing the atomic model began in ancient Greece with philosophers like Democritus, who proposed that everything is composed of small, indivisible particles called atoms. However, it wasn't until the 19th century that scientists began to formulate a more scientific approach to the atomic model. John Dalton, an English chemist, introduced the first modern atomic model, suggesting that each element is made up of unique atoms that combine in fixed ratios to form compounds.As research progressed, the atomic model underwent several revisions. In 1897, J.J. Thomson discovered the electron, leading to the development of the plum pudding model, where atoms were visualized as a positively charged 'soup' with negatively charged electrons scattered throughout. This model, however, was soon challenged by Ernest Rutherford's gold foil experiment in 1909, which revealed that atoms have a dense nucleus at their center, surrounded by electrons. This led to the Rutherford model, which depicted the atom as a miniature solar system.The most significant advancement in the atomic model came with Niels Bohr in 1913. Bohr proposed that electrons orbit the nucleus in specific energy levels, introducing the idea of quantized orbits. This atomic model explained why atoms emit light at certain wavelengths when heated, as electrons jump between energy levels. However, even this model had limitations, particularly when applied to larger atoms.In the mid-20th century, the advent of quantum mechanics revolutionized the atomic model. Scientists like Erwin Schrödinger and Werner Heisenberg developed a new framework for understanding atomic behavior, leading to the quantum mechanical model of the atom. This model does not depict electrons as particles traveling in fixed orbits but rather as wave functions that describe probabilities of finding an electron in a given space. The quantum mechanical atomic model has proven to be incredibly accurate and is widely accepted in modern physics.Understanding the atomic model is crucial not only for chemistry but also for various fields such as biology, materials science, and engineering. It lays the foundation for comprehending chemical reactions, the behavior of materials, and even the principles behind advanced technologies like semiconductors and nanotechnology. The atomic model also has philosophical implications, challenging our perceptions of reality and the nature of existence itself.In conclusion, the atomic model represents a fundamental concept in science that has undergone substantial evolution. From the early ideas of indivisible particles to the complex quantum mechanical descriptions of atomic structure, the atomic model continues to be a vital area of study. As we advance further into the realm of quantum physics and explore the intricacies of atomic interactions, the atomic model will undoubtedly continue to evolve, revealing new insights about the universe around us.

“原子模型”的概念在几个世纪以来经历了显著的发展，塑造了我们对物质和宇宙的理解。在其核心，原子模型旨在解释原子的结构，原子是所有物质的基本构件。原子模型发展的旅程始于古希腊，哲学家德莫克利特提出一切由称为原子的不可分割的小粒子组成。然而，直到19世纪，科学家们才开始对原子模型进行更为科学的探讨。英国化学家约翰·道尔顿提出了第一个现代原子模型，认为每种元素由独特的原子组成，这些原子以固定比例结合形成化合物。随着研究的进展，原子模型经历了几次修订。1897年，J.J. 汤姆森发现了电子，导致了李子布丁模型的出现，该模型将原子视为一种正电荷的“汤”，负电荷的电子散布其中。然而，这一模型很快被欧内斯特·卢瑟福在1909年的金箔实验所挑战，该实验揭示了原子中心有一个致密的核，周围环绕着电子。这导致了卢瑟福模型的形成，该模型将原子描绘成一个微型的太阳系。在1913年，尼尔斯·玻尔提出了对原子模型的重大进展。玻尔提出电子在特定能级上围绕原子核旋转，引入了量子轨道的概念。这个原子模型解释了为什么原子在加热时会以特定波长发光，因为电子在能级之间跳跃。然而，即使这个模型也有局限性，尤其是在应用于较大原子时。在20世纪中叶，量子力学的出现彻底改变了原子模型。厄尔温·薛定谔和维尔纳·海森堡等科学家为理解原子行为开发了一种新的框架，导致了量子力学模型的形成。该模型并不将电子视为在固定轨道上运动的粒子，而是作为描述在给定空间中找到电子概率的波函数。量子力学原子模型被证明是极其准确的，并在现代物理学中广泛接受。理解原子模型不仅对化学至关重要，也对生物学、材料科学和工程等各个领域至关重要。它为理解化学反应、材料行为，甚至是半导体和纳米技术等先进技术的原理奠定了基础。原子模型也具有哲学意义，挑战了我们对现实和存在本质的看法。总之，原子模型代表了科学中的一个基本概念，经历了实质性的演变。从早期不可分割粒子的理念到复杂的量子力学原子结构描述，原子模型仍然是一个重要的研究领域。随着我们进一步进入量子物理的领域，探索原子相互作用的复杂性，原子模型无疑将继续发展，揭示关于我们周围宇宙的新见解。