atomic nucleus

简明释义

原子核

英英释义

例句

1.During nuclear fusion, two atomic nuclei combine to form a heavier nucleus.

在核聚变过程中，两个原子核结合形成一个更重的原子核。

2.The atomic nucleus contains protons and neutrons, which are known as nucleons.

在原子核中包含质子和中子，这些被称为核子。

3.Scientists study the atomic nucleus to understand the forces that hold it together.

科学家研究原子核以理解将其结合在一起的力量。

4.The stability of an atom depends on the structure of its atomic nucleus.

一个原子的稳定性取决于其原子核的结构。

5.Radioactive decay occurs when an atomic nucleus is unstable.

当原子核不稳定时，会发生放射性衰变。

作文

The study of the atomic nucleus has been a fundamental aspect of physics and chemistry for many years. The atomic nucleus (原子核) is the central part of an atom, composed of protons and neutrons, which are collectively known as nucleons. Protons carry a positive charge, while neutrons are neutral. This intricate structure plays a crucial role in determining the properties of elements and their isotopes. Understanding the atomic nucleus (原子核) is essential not only for theoretical physics but also for practical applications such as nuclear energy and medical imaging.One of the most fascinating aspects of the atomic nucleus (原子核) is its stability. The forces that hold the nucleus together are incredibly strong, overcoming the repulsive forces between the positively charged protons. This balance of forces is described by the theory of nuclear binding energy, which explains why certain nuclei are stable while others are not. For instance, larger nuclei tend to be less stable and may undergo radioactive decay, releasing energy in the process. This phenomenon is not just a scientific curiosity; it has practical implications in fields like radiology and nuclear power generation.In addition to stability, the atomic nucleus (原子核) is also responsible for the vast diversity of elements we observe in nature. Each element is defined by the number of protons in its nucleus, known as the atomic number. For example, hydrogen has one proton, while helium has two. Variations in the number of neutrons lead to different isotopes of the same element, which can have distinct physical properties. This isotopic variation is significant in various scientific fields, including geology, archaeology, and medicine, where isotopes are used for dating materials or tracing biochemical processes.Moreover, advancements in technology have allowed scientists to manipulate the atomic nucleus (原子核) in ways that were once thought impossible. Techniques such as nuclear fusion and fission are examples of how we can harness the energy stored within the nucleus. Fusion, the process that powers the sun, involves combining light nuclei to form heavier ones, releasing enormous amounts of energy. Conversely, fission involves splitting heavy nuclei into lighter ones, which is the principle behind nuclear reactors. Both processes highlight the potential of the atomic nucleus (原子核) as a source of energy, albeit with significant challenges related to safety and waste management.In conclusion, the atomic nucleus (原子核) is a complex and vital component of matter that influences a wide range of scientific disciplines. Its study not only enhances our understanding of the universe at a fundamental level but also paves the way for technological advancements that can benefit society. As research continues to evolve, the mysteries of the atomic nucleus (原子核) will undoubtedly reveal new insights, further bridging the gap between theoretical knowledge and practical application. The journey of understanding the atomic nucleus (原子核) is far from over, and it promises to be an exciting frontier for future generations of scientists.

原子核的研究多年来一直是物理学和化学的基础方面。原子核是原子的中心部分，由质子和中子组成，这些统称为核子。质子带有正电荷，而中子是中性的。这种复杂的结构在决定元素及其同位素的性质方面发挥着至关重要的作用。理解原子核不仅对理论物理至关重要，而且对核能和医学成像等实际应用也至关重要。原子核最迷人的方面之一是它的稳定性。保持核子结合的力量非常强大，克服了正电荷质子之间的排斥力。这种力量的平衡由核结合能理论描述，该理论解释了为什么某些核子是稳定的而其他核子则不稳定。例如，较大的核子往往不太稳定，可能会经历放射性衰变，在此过程中释放能量。这一现象不仅是科学好奇心；它在放射学和核能发电等领域具有实际意义。除了稳定性之外，原子核还负责我们在自然界中观察到的元素的巨大多样性。每个元素由其核子中的质子数定义，称为原子序数。例如，氢有一个质子，而氦有两个。中子数量的变化导致同一元素的不同同位素，这些同位素可能具有不同的物理性质。这种同位素变化在地质学、考古学和医学等多个科学领域中具有重要意义，其中同位素用于材料的年代测定或追踪生化过程。此外，技术的进步使科学家能够以曾经认为不可能的方式操纵原子核。核聚变和裂变等技术就是我们如何利用核子内储存的能量的例子。聚变是使太阳发光的过程，涉及将轻核结合形成较重核，并释放出巨大的能量。相反，裂变涉及将重核分裂成较轻的核，这是核反应堆背后的原理。这两种过程突显了原子核作为能源来源的潜力，尽管与安全和废物管理相关的重大挑战仍然存在。总之，原子核是物质的复杂且重要的组成部分，影响着广泛的科学学科。它的研究不仅增强了我们对宇宙基本层面的理解，而且为能够造福社会的技术进步铺平了道路。随着研究的不断发展，原子核的奥秘无疑将揭示新的见解，进一步弥合理论知识与实际应用之间的差距。理解原子核的旅程远未结束，它承诺将成为未来科学家们激动人心的前沿。