dipole

简明释义

英[ˈdaɪpəʊl]美[ˈdaɪpoʊl]

n. [物化] 偶极；双极子

英英释义

单词用法

同义词

反义词

例句

1.The problem of the dipole cloud is an effective scattering cross-section while observed by a monostatic radar was studied.

偶极子云的问题是在通过单基地雷达观测时有效散射截面。

2.Forbidden transitions are those for which dipole radiative transitions are not allowed by the selection rules.

禁戒跃迁指的是选择定则所不容许的偶极辐射跃迁。

3.I have to ask is there a net dipole?

我必须问这里是否有一个网状偶极？

4.Any heteronuclear diatomic molecule must have a dipole moment since its two ends are different.

任何异核双原子分子必然具有偶极矩，因为它的两端是不同的。

5.Finely, the radiation of the electric dipole and magnetic dipole are discussed under the two potential formulation.

最后讨论了电偶极和磁偶极辐射在双矢势下的表达式。

6.The isoscalar giant surface resonance and giant dipole resonance in highly excited nuclei are discussed.

本文讨论了高激发核中的同位旋标量表面巨共振和偶极巨共振。

7.And different thickness symmetry dipole antenna can be chosen by different requirement on capability of antenna in practice.

实用中可以根据对天线性能的要求，选择合适粗细的对称振子天线。

8.In physics, the electric field around a dipole 偶极子 can be calculated using specific formulas.

在物理学中，围绕dipole 偶极子的电场可以使用特定公式计算。

9.The water molecule is a classic example of a dipole 偶极子 due to its polar covalent bonds.

水分子是一个经典的dipole 偶极子的例子，因为它具有极性共价键。

10.A dipole 偶极子 antenna is commonly used in wireless communication systems.

在无线通信系统中，常用dipole 偶极子天线。

11.Measuring the strength of a dipole 偶极子 moment helps scientists understand molecular polarity.

测量dipole 偶极子矩的强度有助于科学家理解分子的极性。

12.The interaction between two dipoles 偶极子 can lead to complex molecular behavior.

两个dipole 偶极子之间的相互作用可能导致复杂的分子行为。

作文

In the realm of physics and chemistry, the concept of a dipole plays a crucial role in understanding molecular interactions and behaviors. A dipole, derived from the Greek word 'di' meaning two and 'pole' indicating ends, refers to a pair of equal and oppositely charged or magnetized poles separated by a distance. This phenomenon is particularly significant in the study of polar molecules, where the distribution of electrical charge leads to the formation of positive and negative regions within the molecule. For example, water (H2O) is a classic example of a polar molecule that exhibits a strong dipole moment due to its bent shape and the electronegativity difference between hydrogen and oxygen atoms. The oxygen atom pulls the shared electrons more closely towards itself, resulting in a partial negative charge on the oxygen and a partial positive charge on the hydrogens. This unequal sharing of electrons creates a permanent dipole moment, which is responsible for many of water's unique properties, such as its high boiling point and its ability to dissolve various substances. Understanding dipoles is also essential in the context of intermolecular forces. The interaction between polar molecules is largely governed by dipole-dipole interactions, where the positive end of one polar molecule is attracted to the negative end of another. This attraction can significantly influence the physical properties of substances, including their melting and boiling points. For instance, substances with strong dipole interactions tend to have higher boiling points compared to non-polar substances of similar molecular weight. Moreover, dipoles are not limited to molecular interactions; they also play a fundamental role in electromagnetic fields. In the context of electromagnetism, a dipole antenna is used to transmit and receive radio waves. The design of these antennas relies on the principles of dipole radiation, where the oscillation of electric charges generates electromagnetic waves. Understanding how dipoles function in this capacity is vital for advancements in communication technology. In addition, the concept of dipoles extends into the field of molecular biology. Many biomolecules, such as proteins and nucleic acids, exhibit dipole characteristics that influence their structure and function. The presence of dipole moments in these molecules can affect how they interact with other biological molecules, impacting processes such as enzyme-substrate binding and DNA hybridization. In conclusion, the concept of a dipole is integral to numerous scientific disciplines, from chemistry and physics to biology and engineering. By understanding the nature of dipoles, we gain insight into the behavior of molecules, the interactions that govern physical properties, and the technologies that rely on these fundamental principles. As research continues to evolve, the importance of dipoles will undoubtedly remain a cornerstone in our exploration of the natural world and the development of innovative technologies.

在物理和化学的领域中，dipole（偶极子）这一概念在理解分子相互作用和行为方面起着至关重要的作用。dipole源自希腊语单词“di”，意为二，和“pole”，表示极，指的是一对等量且相反电荷或磁极之间的距离。这个现象在极性分子的研究中尤为重要，因为电荷的分布导致分子内部形成正负区域。 例如，水（H2O）是一个经典的极性分子，由于其弯曲的形状和氢与氧原子之间的电负性差异，表现出强烈的dipole矩。氧原子将共享电子更紧密地拉向自己，从而导致氧原子带有部分负电荷，而氢原子带有部分正电荷。这种不均匀的电子共享产生了一个永久的dipole矩，负责水的许多独特性质，例如其高沸点和溶解各种物质的能力。 理解dipole在分子间力的背景下也至关重要。极性分子之间的相互作用主要受到偶极-偶极相互作用的支配，正极的一个极性分子被另一个分子的负极所吸引。这种吸引力可以显著影响物质的物理性质，包括其熔点和沸点。例如，具有强dipole相互作用的物质相比于相似分子量的非极性物质，往往具有更高的沸点。 此外，dipole不仅限于分子间的相互作用；它们在电磁场中也发挥着基础性作用。在电磁学的背景下，dipole天线用于传输和接收无线电波。这些天线的设计依赖于dipole辐射的原理，其中电荷的振荡产生电磁波。理解dipole在这一能力中的功能对于通信技术的进步至关重要。 此外，dipole的概念延伸到分子生物学领域。许多生物分子，如蛋白质和核酸，表现出dipole特征，这影响它们的结构和功能。这些分子中dipole矩的存在可能影响它们与其他生物分子的相互作用，从而影响酶-底物结合和DNA杂交等过程。 总之，dipole的概念是众多科学学科的基石，从化学和物理到生物学和工程。通过理解dipole的本质，我们可以深入了解分子的行为、支配物理性质的相互作用，以及依赖于这些基本原理的技术。随着研究的不断发展，dipole的重要性无疑将继续成为我们探索自然世界和开发创新技术的基石。