heat radiation

简明释义

热辐射

英英释义

例句

1.During the winter, we can feel heat radiation 热辐射 from the radiator in our home.

在冬天，我们可以感受到家中散热器发出的热辐射热辐射。

2.The sun emits a significant amount of heat radiation 热辐射, which warms the Earth.

太阳发出大量的热辐射热辐射，使地球变暖。

3.Thermal cameras can detect heat radiation 热辐射 emitted by objects.

热成像相机可以检测到物体发出的热辐射热辐射。

4.In a fireplace, heat radiation 热辐射 is one of the primary ways heat is transferred to the room.

在壁炉中，热辐射热辐射是加热房间的主要方式之一。

5.The efficiency of a heater depends on how well it converts electricity into heat radiation 热辐射.

加热器的效率取决于它将电能转化为热辐射热辐射的能力。

作文

Heat is a form of energy that can be transferred from one object to another. One of the primary ways in which heat is transferred is through heat radiation, which refers to the emission of energy as electromagnetic waves. This process occurs when an object emits thermal energy, causing the surrounding environment to absorb that energy and subsequently increase in temperature. Understanding heat radiation is essential in various fields, including physics, engineering, and environmental science.To grasp the concept of heat radiation, it is important to first recognize that all objects emit some level of thermal radiation, depending on their temperature. For instance, a hot stove or a glowing ember radiates more heat than a cold surface. The emitted energy travels through space in the form of infrared radiation, which is invisible to the naked eye but can be felt as warmth. This is why standing close to a fire feels warm; the fire emits heat radiation that warms our skin.In everyday life, we encounter heat radiation in numerous ways. For example, the sun is a massive source of heat radiation, providing the energy necessary for life on Earth. The sunlight that reaches us is composed of various wavelengths, including visible light and infrared radiation. When this sunlight hits the ground, buildings, and even our skin, it transfers energy, warming these surfaces.Moreover, heat radiation plays a crucial role in climate science. The Earth absorbs solar energy during the day and then re-emits some of that energy back into space as heat radiation. This natural process helps regulate the planet's temperature. However, human activities, such as burning fossil fuels and deforestation, have increased greenhouse gas concentrations in the atmosphere. These gases trap some of the outgoing heat radiation, leading to a phenomenon known as the greenhouse effect, which contributes to global warming.In engineering, understanding heat radiation is critical for designing efficient heating systems and insulation materials. For instance, architects and builders must consider how much heat radiation a building loses during colder months and how to minimize this loss. Insulation materials are designed to reduce heat radiation transfer, keeping buildings warmer in winter and cooler in summer.Additionally, heat radiation is utilized in various technologies, such as thermal imaging cameras. These devices detect infrared radiation emitted by objects, allowing us to visualize heat patterns. This technology is beneficial in numerous applications, including firefighting, medical diagnostics, and energy audits for buildings.In conclusion, heat radiation is a fundamental concept that describes how thermal energy is emitted and absorbed by objects. It plays a significant role in our daily lives, from the warmth we feel from the sun to its implications in climate change and engineering. A deeper understanding of heat radiation not only enhances our knowledge of physical principles but also informs our approach to sustainability and energy efficiency in modern society.

热是一种能量形式，可以从一个物体转移到另一个物体。热量传递的主要方式之一是通过热辐射，它指的是以电磁波的形式发射能量的过程。当一个物体发出热能时，就会发生这种过程，导致周围环境吸收该能量并随之升温。理解热辐射在物理学、工程学和环境科学等多个领域都是至关重要的。要理解热辐射的概念，首先必须认识到所有物体都以某种程度的热辐射发射热量，这取决于它们的温度。例如，一个热炉或发光的煤炭比冷表面辐射更多的热量。发出的能量以红外辐射的形式穿过空间传播，这种辐射对肉眼是不可见的，但可以感受到温暖。这就是为什么靠近火焰时会感到温暖；火焰发出的热辐射使我们的皮肤变暖。在日常生活中，我们以多种方式遇到热辐射。例如，太阳是热辐射的巨大来源，提供了地球上生命所需的能量。到达我们的阳光由各种波长组成，包括可见光和红外辐射。当阳光照射到地面、建筑物甚至我们的皮肤上时，它会传递能量，使这些表面变暖。此外，热辐射在气候科学中发挥着至关重要的作用。地球在白天吸收太阳能，然后将部分能量作为热辐射重新发射回太空。这一自然过程帮助调节地球的温度。然而，人类活动，如燃烧化石燃料和森林砍伐，增加了大气中温室气体的浓度。这些气体捕获了一些向外发射的热辐射，导致了被称为温室效应的现象，从而促进了全球变暖。在工程领域，理解热辐射对于设计高效的供暖系统和绝缘材料至关重要。例如，建筑师和施工者必须考虑在寒冷的月份建筑物失去多少热辐射，以及如何最小化这种损失。绝缘材料旨在减少热辐射的传递，使建筑物在冬季更温暖，在夏季更凉爽。此外，热辐射还被用于各种技术中，例如热成像相机。这些设备检测物体发出的红外辐射，使我们能够可视化热模式。这项技术在许多应用中都非常有用，包括消防、医学诊断和建筑能量审计。总之，热辐射是一个基本概念，描述了热能是如何被物体发射和吸收的。它在我们的日常生活中扮演着重要角色，从我们感受到的阳光的温暖到其在气候变化和工程中的影响。对热辐射的深入理解不仅增强了我们对物理原理的认识，还为我们在现代社会中对可持续性和能源效率的方法提供了信息。